SOLUTION: sin theta=2/3 cos theta<0

Question 549261: sin theta=2/3 cos theta<0
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
sin theta=2/3 cos theta<0
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sine is + and cosine neg in Q2

theta = arccos(sqrt(5)/3) in Q2
=~ 138.19 degs
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