2 sin 30 + tan square 45 degree - cos square 150 degree
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2 sin 30 + tan square 45 degree - cos square 150 degree
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=2 sin30 + tan^2 45 + cos^150
= 2 (1/2) + (1)^2 + cos(90+60)
=1 + 1 + sin60 (because cos (90+theta)= sin theta)
= 2 + root 3/2