Question

In a right angled triangle SinA =1/2 . Find the numerical value of CosA

Answer 1

$\sin(a) = \frac{1}{2} \\ \\ \sin(a) = \sin(30) \\ \\ \\ a = 30$

Hence,

$\cos(a) = \cos(30) \\ \\ \\ \cos(a) = \frac{root3}{2}$