Question 797773
Find all solutions for (Let @ represent theta)

(2sin@-1)(2cos@+3)=0
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Either 2sin - 1 = 0
sin = 1/2
theta = 30, 150 + 2n*360, n = 0, 1, 2, 3... degs
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or 
2cos + 3 = 0
cos = -3/2 No real number solutions