2 cos^2theta + sin theta - 2 = 0 . Find the value of theta
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Theta=30
ive put cos theta as root 3/2 and sin theta as 1/2
2(root3/2)^2+1/2-2
= 2(3/4)+1/2-2
= 3/2+1/2-2
= 4/2-2
= 2-2
= 0
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