SOLUTION: Find the solution of sin 2θ=cosθ if 0°<or=θ<180°.
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Algebra.Com
Question 42530: Find the solution of sin 2θ=cosθ if 0°
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Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Let q be theta...
Thus if
sin 2q = cos q we have
2 sin q cos q = cos q
2 sin q = 1
sin q = 1/2
and
q = 30 degrees or 150 degrees or, in radians, (pi)/6 or 5(pi)/6
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