Posted by Anonymous on Thursday, November 22, 2007 at 9:01pm.
For the following equation, why cannot I not solve it? I keep getting an error.
2cosx - 3 = 0
I first isolated for "x"
2cosx-3 = 0
(2cosx/2) = (3/2)
x = cos^-1(3/2)
x = error? why?
My textbook answer:
30 and 330 degrees
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