7sin^2 theta -22 sin theta +3 =0
7sin^theta - 21sin theta -sin theta + 3
7sin theta(sin theta-1)- 1( sin theta-1) =0
(7sin theta-1) (sin theta-1)=0
sin theta= 1 or 1/7
any doubt let me know
I need the answer(s) in __+2*K*pi
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