Question

prove that Sin A +Cos A =1 ​

Answer 1

Bro There is some mistakes.

Question must be Sin²A + Cos²A = 1

So,

To Prove :- Sin²A + Cos²A = 1

Lets take L.H.S,

= Sin²A + Cos²A

= p²/h² + b²/h²

= p²+b²/h²

= h²/h² ( p²+b²= h² )

= 1

Look this is the first identity of Trigonometry and it is very important while solving the questions.