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Line 1: − #1 In Right angled ∆ABC,∟BAC= 90°,∟B: ∟C = 1:2 andAC= 4cm.calculate thelenght of BC+ − + + + + + + + + Line 12:
Line 19: − #2 A door of width 6 mt has an archabove it having aheight of 2 mt , find the radius if the arch − + + + + + + Line 41:
Line 52: − # 3 The sides of a right angled triangle are in an AP. Show that sides are in ther ratio 3:4:5+ + +
Activities-Pythagoras theorem problems (view source)
Revision as of 13:14, 11 July 2014
, 13:14, 11 July 2014no edit summary
''''''Solution'''''''''
'''Difficulty problems in Exercise 11.1 in pythagorus theorem chapter''''''
(4) In Right angled ∆ABC,∟BAC= 90°,∟B: ∟C = 1:2 andAC= 4cm.calculate thelenght of BC
''''''Solution
in some special right angled triangle
in some special right angled triangle
whose angle ratio 1:2:3 that is 30-60-90
whose angle ratio 1:2:3 that is 30-60-90
BC = 8 cm
BC = 8 cm
Solution
(6) A door of width 6 mt has an archabove it having aheight of 2 mt , find the radius if the arch
'''
Solution'''
In figure given
In figure given
OC= 3.25 mt
OC= 3.25 mt
radius of arch is 3.25 mt
radius of arch is 3.25 mt
(7) The sides of a right angled triangle are in an AP. Show that sides are in ther ratio 3:4:5
'''Solution'''
'''Solution'''