InterviewSolution
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InterviewSolution
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सिद्धकीजिए कि-sinto + cos²=1 |
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Answer» tion:Let a, B, C be lengths of right ANGLED triangleBy definitionsinθ=b/c( hypotenuseopposite side )cosθ=a/c( hypotenuseadjacent side )SIN 2 θ+cos 2 θ= c 2 b 2 + c 2 a 2 = c 2 a 2 +b 2 From Pythagoras theoremc 2 =a 2 +b 2 ∴ c 2 a 2 +b 2 =1SIN 2 θ+cos 2 θ=1Hence, proved.solution |
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