Question

If $\sin A=\frac{3}{5}$, then find $\cos A$ and $cosecA$

Answer 1

$sinA=\frac{3}{5}$
$cosA=\sqrt{1-si{n}^{2}A}=\sqrt{1-\frac{9}{25}}=\frac{4}{5}$
$cosecA=\frac{1}{sinA}=\frac{5}{3}$