Question #144042
What determines whether cos(theta/2) is positive or negative?

A. The quadrant that theta is located in.
B. The quadrant that theta/2 is located in.
C. The quadrant that 2theta would be located in.
D. It doesn't matter
1
Expert's answer
2020-11-12T18:57:46-0500

B. The quadrant that theta/2 is located in.


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