Question

if the value of cos theta= root 3 by 2, then find the value of sin 3 theta​

Answer 1

$\large{ \boxed{ \cos \theta = \frac{ \sqrt{3} }{2} }}$

$\large{ \boxed{ \cos 30 \degree = \frac{ \sqrt{3} }{2} }}$

$\large{ \boxed{ \theta = 30 \degree }}$

$\large{ \boxed{ \sin \: 3 \theta = \sin \: 3 \times 30 = sin \: 90 \degree = 1}}$

==>The answer is 1