Question

the value of sec²A - 1/cot²A is equal to (/ means by)​

Answer 1

$\frac{1}{ \cos {}^{2} (a) } - \frac{ \sin {}^{2} ( {}a{} ) }{ \cos {}^{2} (a) }$

$\frac{1 - \sin { }^{2} (a) }{ \cos {}^{2} (a) } = \frac{ \cos {}^{2} (a) }{ \cos {}^{2} (a) } = 1$

1 is the answer