Question

solve and send it fast!!​

Answer 1

$\sin(a) = 12$

$\sin ^{2} (a) = 144$

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

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

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

$\frac{ \cos {}^{2} (a) }{ \cos {}^{2} (a) }$

$1$