Question

( operatorname{sol}^{n} cdot sin theta+sin 3 theta+sin 2 theta=sin alpha )
( 2 sin 2 theta cos theta+sin 2 theta=sin alpha )
( sin 2 theta(2 cos theta+1)=sin alpha=(1) )
( cos theta+cos 3 theta+cos 2 theta=cos alpha )
( 2 cos 2 theta cos theta+cos 2 theta=cos alpha=(1) )
( (1)^{circ}=cos 2 theta(2 cos theta+1)=cos alpha=(1) )
( 2 theta=tan theta )

# ») sin or Sin 20+ sin 30= sind & Cosot C0520+ COS 302 cosa Pala ba 10 2x dj a16

Solution