Question

prove that.sin²x+cos²x=1​

Answer 1

Answer:

sin €= p/h

cos €=b/h

therefore,

sin^2x=p^2/h^2

cos^2x=b^2/h^2

sin^2 x+cos^2 x=p^2/h^2+b^2/h^2

1 =(p^2+b^2)/h^2

1 =h^2/h^2[using pythagoras theorem]

1 =1

Hence,proved....

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Answer 2

This is the answer.Hope this help.