Question

Help me in this question

Answer 1

$\frac{ \sqrt{3} }{2} \times \frac{ \sqrt{3} }{2} + \frac{1}{2} \times \frac{1}{2} \\ \frac{3}{4} + \frac{1}{4} \\ \frac{4}{4} \\ 1$
LHS=RHS
hence proved
please do it brainleist.