Difference between revisions of "Trigonometry"

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= Textbook=
 
= Textbook=
 
#[http://ktbs.kar.nic.in/New/Textbooks/class-x/english/maths/class-x-english-maths-chapter12.pdf Karnataka text book for Class 10, Chapter 12 - Trigonometry]
 
#[http://ktbs.kar.nic.in/New/Textbooks/class-x/english/maths/class-x-english-maths-chapter12.pdf Karnataka text book for Class 10, Chapter 12 - Trigonometry]
−
For NCERT Text book Please click [http://www.ncert.nic.in/NCERTS/textbook/textbook.htm?jemh1=ps-14 here]<br>For TAMILNAADU Text book click [http://www.textbooksonline.tn.nic.in/Books/Std10/Std10-Maths-EM-1.pdf here] and [http://www.textbooksonline.tn.nic.in/Books/Std09/Std09-II-Maths-EM.pdf here]
+
For NCERT Text book Please click [http://www.ncert.nic.in/NCERTS/textbook/textbook.htm?jemh1=ps-14 here]<br>For Tamil Nadu Text book click [http://www.textbooksonline.tn.nic.in/Books/Std10/Std10-Maths-EM-1.pdf here] and [http://www.textbooksonline.tn.nic.in/Books/Std09/Std09-II-Maths-EM.pdf here]
  
 
=Additional Information=
 
=Additional Information=
 
==Useful websites==
 
==Useful websites==
−
#To get the yakub koyyur GHS Nada videos on Trigonometry in Kannada [http://karnatakaeducation.org.in/KOER/index.php/೧೦ನೇ_ತರಗತಿಯ_ತ್ರಿಕೋನಮಿತಿ click here]   
+
#To get Yakub Koyyur GHS Nada videos on Trigonometry in Kannada [http://karnatakaeducation.org.in/KOER/index.php/೧೦ನೇ_ತರಗತಿಯ_ತ್ರಿಕೋನಮಿತಿ click here]   
−
# Trigonometry on wikipedia click [http://en.wikipedia.org/wiki/Trigonometry here]
+
# Trigonometry on Wikipedia click [http://en.wikipedia.org/wiki/Trigonometry here]
−
#[https://www.khanacademy.org/math/trigonometry/basic-trigonometry/basic_trig_ratios/v/basic-trigonometry| khan academy trigonometry video]
+
#[https://www.khanacademy.org/math/trigonometry/basic-trigonometry/basic_trig_ratios/v/basic-trigonometry| Khan academy trigonometry video]
 
#For more about trigonometry click [http://www.sosmath.com/trig/trig.html here]
 
#For more about trigonometry click [http://www.sosmath.com/trig/trig.html here]
−
#[https://www.khanacademy.org/math/trigonometry| trigonometry: khan academy}
+
#https://www.khanacademy.org/math/trigonometry| Trigonometry: khan academy
−
#[http://www.mathsisfun.com/algebra/trigonometry.html - fundamentalconcept of angle in trignometry] this web describes trignoometrical functions
+
#[http://www.mathsisfun.com/algebra/trigonometry.html - fundamental concept of angle in trigonometry] this web describes trigonometrical functions
−
# videos on trignometry from youtube which will give basic ideas
+
# Videos on Trigonometry from YouTube for basic ideas
 
{{#widget:YouTube|id=T8B8Tcz8kog}}
 
{{#widget:YouTube|id=T8B8Tcz8kog}}
 
{{#widget:YouTube|id=1I7Jp62sGXM}}
 
{{#widget:YouTube|id=1I7Jp62sGXM}}
 
{{#widget:YouTube|id=0UM5xzerIC0}}
 
{{#widget:YouTube|id=0UM5xzerIC0}}
−
#slide share about trignomety and its application   
+
#Slide share about trigonometry and its application   
 
  {{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/32928126 |width=450 |height=360 |border=1  }} {{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/22551159 |width=450 |height=360 |border=1  }} {{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/32096288 |width=450 |height=360 |border=1  }}
 
  {{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/32928126 |width=450 |height=360 |border=1  }} {{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/22551159 |width=450 |height=360 |border=1  }} {{#widget:Iframe |url=http://www.slideshare.net/slideshow/embed_code/32096288 |width=450 |height=360 |border=1  }}
  
 
==Reference Books==
 
==Reference Books==
−
For more detailsof trigonometry see these trigonometry reference books.
+
For more details of trigonometry see these trigonometry reference books.
−
#Text Book of Mathematics Preuniversity Karnataka Government
+
#Text Book of Mathematics Pre university Karnataka Government
 
#Trigonometry, I.M. Gelfand, Mark Saul
 
#Trigonometry, I.M. Gelfand, Mark Saul
 
#Trigonometry Refresher (Dover Books on Mathematics), A. Albert Klaf, Mathematics
 
#Trigonometry Refresher (Dover Books on Mathematics), A. Albert Klaf, Mathematics
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#Understanding the contribution of Indians in the field of Trigonometry
 
#Understanding the contribution of Indians in the field of Trigonometry
 
===Notes for teachers===
 
===Notes for teachers===
−
Give information about the contribution of Indians in the field of Trigonometry to your children, it is developes interest in development of trigonometry.
+
Give information about the contribution of Indians in the field of Trigonometry to your children, it would help to  develop an interest in development of Trigonometry.
  
 
===Activities===
 
===Activities===
 
Activity No.1
 
Activity No.1
−
For History of Trigonometry [http://en.wikipedia.org/wiki/History_of_trigonometry click here] <br>
+
For History of Trigonometry [http://en.wikipedia.org/wiki/History_of_trigonometry click here] <br>Activity No.2
−
Activity No.2
+
For History of Trigonometry slide show [http://www.slideshare.net/rashidivya/trigonometry-maths-school-ppt-2 click here]
−
For History of Trigonometry slideshow [http://www.slideshare.net/rashidivya/trigonometry-maths-school-ppt-2 click here]
 
  
−
=='''Angle Mesurment'''==
+
=='''Angle Measurement'''==
 
===Learning objectives===
 
===Learning objectives===
−
* Understanding the units of mesurment of an angle
+
* Understanding the units of measurement of an angle
−
* Understanding the interconversion units of mesurment of an angle
+
* Understanding the interconversion units of measurement of an angle
  
 
===Notes for teachers===
 
===Notes for teachers===
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===Activities===
 
===Activities===
−
#Activity No #1[[trigonometry_Angle Measurement _activity 1 | Introducing units of angle mesurments]]
+
#Activity No #1[[trigonometry_Angle Measurement _activity 1 | Introducing units of angle measurements]]
−
#Activity No #2[[trigonometry_Angle Measurement _activity 2 | Interconversion between degree mesurment and angle mesurment]]
+
#Activity No #2[[trigonometry_Angle Measurement _activity 2 | Interconversion between degree measurement and angle measurement]]
 +
#Activity No #3 [[Angles of elevation and depression|Angle of elevation and angle of depression]]
  
 
==''' Introduction to Trigonometric Ratios '''==
 
==''' Introduction to Trigonometric Ratios '''==
 
===Learning objectives===
 
===Learning objectives===
−
* Identifying the opposite side, adjacent side, and hypotenus of a right -ngle triangle.
+
*
−
* Undestanding the concept of different Trigonometric ratios.
+
* Identifying the opposite side, adjacent side, and hypotenuse of a right -angle triangle.
 +
* Understanding the concept of different Trigonometric ratios.
  
 
===Notes for teachers===
 
===Notes for teachers===
−
'' Use property of similar triangle theorem for two similar right angled triangle during development of trigonometric ratios.  ''
+
'' Use property of similar triangle theorem for two similar right-angled triangles during development of trigonometric ratios.  ''
  
 
===Activities===
 
===Activities===
−
#Activity No #1
+
[[trigonometry_Introduction to Trigonometric Ratios _activity 1 | Introduction to Trigonometric Ratios]]
−
#Activity No #2
+
#Introduction to Trigonometry - [[Introduction to Trigonometry|Click here]]
 +
#Activity1_Basic Trigonometric ratios - [[Activity1 Basic Trignometric Ratios|click here]]
  
−
=='''Trignometric ratio with angles'''==
+
=='''Trigonometric ratio with angles'''==
 
===Learning objectives===
 
===Learning objectives===
 
===Notes for teachers===
 
===Notes for teachers===
 
Many teachers and students feel that Trigonometry is a difficult to understand subject. One reason for this is that Trigonometry is multi-concept based. A student should know following concepts well
 
Many teachers and students feel that Trigonometry is a difficult to understand subject. One reason for this is that Trigonometry is multi-concept based. A student should know following concepts well
 
#of measuring-angles, triangle and right-angled triangle,  
 
#of measuring-angles, triangle and right-angled triangle,  
−
#pythogorus theorem,  
+
#Pythagoras theorem,  
 
#ratios,  
 
#ratios,  
 
#proportionality
 
#proportionality
 
#Identities.  
 
#Identities.  
−
#Trigonometry also require students insight,v isualization ,and perceptual ability.
+
#Trigonometry also require students insight, visualization, and perceptual ability.
  
 
===Activities===
 
===Activities===
−
#Activity No #1
+
#Activity No #1- Trigonometry ratios - [[Trigonometry ratios|Click here]]
−
[[trigonometry_Introduction to Trigonometric Ratios _activity 1 | Introduction to Trigonometric Ratios]]
 
−
#Activity No #2
 
  
−
=='''Aplication of Trignometry'''==
+
=='''Application of Trigonometry'''==
 
===Learning objectives===
 
===Learning objectives===
 
===Notes for teachers===
 
===Notes for teachers===
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=='''Problem-1'''==
 
=='''Problem-1'''==
 
'''prove that''' <math>\frac{1-\tan^2 A}{1+\tan^2 A}=1-\sin^2 A</math><br>
 
'''prove that''' <math>\frac{1-\tan^2 A}{1+\tan^2 A}=1-\sin^2 A</math><br>
 +
 
Solution of this problem [[Class10_trigonometry_problems#Problem-1| click here]]
 
Solution of this problem [[Class10_trigonometry_problems#Problem-1| click here]]
  
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=='''PROJECT 1.'''==  
 
=='''PROJECT 1.'''==  
 
'''Calculation of angle of elevation'''<br>Trigonometry is around us.In this project ,we will apply our knowledge of trigonometry to shadows in order to calculate the angle of elevation to the sun at different times of day.<br>
 
'''Calculation of angle of elevation'''<br>Trigonometry is around us.In this project ,we will apply our knowledge of trigonometry to shadows in order to calculate the angle of elevation to the sun at different times of day.<br>
−
''' Procedure of Project:'''
+
''' Procedure of Project:''' To calculate the angle of elevation of the sun go through the procedure <br>
−
To calculate the angle of elevation of the sun go through the procedure <br>
+
*Measure your height and the length of the shadow you cast at two different times of day [at least 3 hours apart]
−
*Mesure your height and the length of the shadow you cast at two different times of day [at least 3 hours apart]
 
 
*Record the times and measurements [with units]
 
*Record the times and measurements [with units]
 
*Draw the right triangle in this scenario.
 
*Draw the right triangle in this scenario.
−
*label the sides of your drawing with your mesurements and angle of elevation
+
*Label the sides of your drawing with your measurements and angle of elevation
−
*Solve for the angle of elevation while clearly showing all your steps<br> '''Note for teachers'''<br> Don't forget that you need to do the procedure above twice for two different times of a day.
+
*Solve for the angle of elevation while clearly showing all your steps<br> '''Note for teachers'''<br> Don't forget that you need to do the procedure above twice two different times in a day.
  
 
= Math Fun =
 
= Math Fun =

Latest revision as of 13:23, 23 May 2021

ಕನ್ನಡದಲ್ಲಿ ನೋಡಿ

Concept Map

[maximize]

Textbook

  1. Karnataka text book for Class 10, Chapter 12 - Trigonometry

For NCERT Text book Please click here
For Tamil Nadu Text book click here and here

Additional Information

Useful websites

  1. To get Yakub Koyyur GHS Nada videos on Trigonometry in Kannada click here
  2. Trigonometry on Wikipedia click here
  3. Khan academy trigonometry video
  4. For more about trigonometry click here
  5. https://www.khanacademy.org/math/trigonometry%7C Trigonometry: khan academy
  6. - fundamental concept of angle in trigonometry this web describes trigonometrical functions
  7. Videos on Trigonometry from YouTube for basic ideas

  1. Slide share about trigonometry and its application

Reference Books

For more details of trigonometry see these trigonometry reference books.

  1. Text Book of Mathematics Pre university Karnataka Government
  2. Trigonometry, I.M. Gelfand, Mark Saul
  3. Trigonometry Refresher (Dover Books on Mathematics), A. Albert Klaf, Mathematics
  4. Schaum's Outline of Trigonometry, 5th Edition, Robert Moyer, Frank Ayres
  5. Trigonometry, 8th Edition, Ron Larson ($$$)
  6. Advanced Trigonometry, by C.V. Durell, A. Robson

Teaching Outlines

History of Trigonometry

Learning objectives

  1. Understanding of how trigonometry is developed
  2. Understanding the contribution of Indians in the field of Trigonometry

Notes for teachers

Give information about the contribution of Indians in the field of Trigonometry to your children, it would help to develop an interest in development of Trigonometry.

Activities

Activity No.1 For History of Trigonometry click here
Activity No.2 For History of Trigonometry slide show click here

Angle Measurement

Learning objectives

  • Understanding the units of measurement of an angle
  • Understanding the interconversion units of measurement of an angle

Notes for teachers

These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.

Activities

  1. Activity No #1 Introducing units of angle measurements
  2. Activity No #2 Interconversion between degree measurement and angle measurement
  3. Activity No #3 Angle of elevation and angle of depression

Introduction to Trigonometric Ratios

Learning objectives

  • Identifying the opposite side, adjacent side, and hypotenuse of a right -angle triangle.
  • Understanding the concept of different Trigonometric ratios.

Notes for teachers

Use property of similar triangle theorem for two similar right-angled triangles during development of trigonometric ratios.

Activities

Introduction to Trigonometric Ratios

  1. Introduction to Trigonometry - Click here
  2. Activity1_Basic Trigonometric ratios - click here

Trigonometric ratio with angles

Learning objectives

Notes for teachers

Many teachers and students feel that Trigonometry is a difficult to understand subject. One reason for this is that Trigonometry is multi-concept based. A student should know following concepts well

  1. of measuring-angles, triangle and right-angled triangle,
  2. Pythagoras theorem,
  3. ratios,
  4. proportionality
  5. Identities.
  6. Trigonometry also require students insight, visualization, and perceptual ability.

Activities

  1. Activity No #1- Trigonometry ratios - Click here

Application of Trigonometry

Learning objectives

Notes for teachers

These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.

Activities

  1. Activity No #1
  2. Activity No #2

Assessment activities for CCE

Hints for difficult problems

Problem-1

prove that

Solution of this problem click here

Project Ideas

PROJECT 1.

Calculation of angle of elevation
Trigonometry is around us.In this project ,we will apply our knowledge of trigonometry to shadows in order to calculate the angle of elevation to the sun at different times of day.
Procedure of Project: To calculate the angle of elevation of the sun go through the procedure

  • Measure your height and the length of the shadow you cast at two different times of day [at least 3 hours apart]
  • Record the times and measurements [with units]
  • Draw the right triangle in this scenario.
  • Label the sides of your drawing with your measurements and angle of elevation
  • Solve for the angle of elevation while clearly showing all your steps
    Note for teachers
    Don't forget that you need to do the procedure above twice two different times in a day.

Math Fun

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