Question

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Answer 1

Step-by-step explanation:

sin 4 theta=sin60 degree(as root3/2=sin theta,it means theta 60 degree)

theta=15 degree

Answer 2

Answer:

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${4sin}^{2} 4 \alpha = 3$

$\sin(4 \alpha ) = \frac{ \sqrt{3} }{2}$

$4 \alpha = \frac{ \sqrt{3} }{2}$

$\alpha = \frac{ \sqrt{3} }{8}$