-(sqrt3)/2
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75/150 is equivalent to 1/2, which is equivalent to 0.5, or one over two.
120/150 = 4/5
150 is 25 percent of 150 x 4 whic his equivalent to 600
No. Cos squared x is not the same as cos x squared. Cos squared x means cos (x) times cos (x) Cos x squared means cos (x squared)
cos i