Question

what is the value of this??
plz guys hlp me wid this!!!

Answer 1

$\cos( \frac{\pi}{3} ) = \cos(60) = \frac{1}{2} \\ \\ { \cos}^{2} \frac{\pi}{3} = \frac{1}{4}$
$\\ \\ \\ \cos( \frac{\pi}{4} ) = \cos(45) = \frac{1}{ \sqrt{2} } \\ { \cos }^{2} \frac{\pi}{4} = \frac{1}{2}$
$\\ \\ \\ \\ \cos( \frac{\pi}{6} ) = \cos(30) = \frac{ \sqrt{3} }{2} \\ { \cos }^{2} \frac{\pi}{6} = \frac{3}{4}$
Hence ratio is


1:2:3