Question

If cos x = cos 60°*cos 30°+sin 60°*sin30° then find the value of x

Answer 1

$\cos( x ) = \frac{1}{2} \times \frac{ \sqrt{3} }{2} + \frac{ \sqrt{3} }{2} \times \frac{1}{2}$
$\cos(x) = 2 \times \frac{1}{2} + 2 \times \frac{ \sqrt{3} }{2}$
$\cos(x) = 1 + \sqrt{3}$