Question

cos^2 A + sin^2A = ?​

Answer 1

Answer:-

1

Whatever be the value of A,

$\sin^2 A + \cos^2 A = 1$

Also,

$\sec^2 A - \tan^2 A = 1$

And

$\rm cosec^2 \ A - \cot^2 A = 1$

Hope it helps