Question

prove that sin square A + cos square A is equal to 1​

Answer 1

Sin A=perpendicular/hypotenuse

Sin A=p/h; cos A =base(b)/hypotenuse (h).

Sin square A=p ^2/h^2

Here ^ denotes power is use

Cos square A=b^2/h^2

Sin ^2 A+cos^2 A= p^2+b^2/h^2

And p^2+b^2 =h^2

By Pythagoras theorem

So, sin ^2A+cos^2 A=h^2/h^2

Sin ^2 A+cos ^2 A=1

Answer 2

HEY FRND

prove :-sin^2 A + cos ^2 A

sin^2 A + cos^2 A { •.• sin^2A + cos^2A =1}..

so, sin^2A + cos ^2A =1

Ans is 1.....HENCE PROVED ^_^