Changes

= 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 - fundamental concept of angle in trigonometry] this web describes trigonoometrical functions

#[http://www.mathsisfun.com/algebra/trigonometry.html - fundamental concept of angle in trigonometry] this web describes trigonometrical functions

# videos on trigonometry from you tube which will give basic ideas

# Videos on Trigonometry from YouTube for basic ideas

{{#widget:YouTube|id=T8B8Tcz8kog}}

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{{#widget:YouTube|id=1I7Jp62sGXM}}

{{#widget:YouTube|id=1I7Jp62sGXM}}

{{#widget:YouTube|id=0UM5xzerIC0}}

{{#widget:YouTube|id=0UM5xzerIC0}}

#slide share about trigonomety 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  }}

#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 slide show [http://www.slideshare.net/rashidivya/trigonometry-maths-school-ppt-2 click here]

==''' Introduction to Trigonometric Ratios '''==

==''' Introduction to Trigonometric Ratios '''==

===Learning objectives===

===Learning objectives===

* Identifying the opposite side, adjacent side, and hypotenous of a right -angle triangle.

* Identifying the opposite side, adjacent side, and hypotenuse of a right -angle triangle.

* Understanding the concept of different Trigonometric ratios.

* 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]]

=='''Trigonometric ratio with angles'''==

=='''Trigonometric ratio with angles'''==

#proportionality

#proportionality

#Identities.  

#Identities.  

#Trigonometry also require students insight,visualization ,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]]

#Activity No #2- Basic Trigonometric ratios - [[Basic Trignometric functions|click here]]

=='''Application of Trigonometry'''==

=='''Application of Trigonometry'''==

=='''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]]

=='''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 measurements 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 =