Trigonometrymedium · Past Paper
The value of cos(120) is:
A1/2
B-1/2
Csqrt(3)/2
D-sqrt(3)/2
✓ Correct Answer: B — -1/2
cos(120) = cos(180 - 60) = -cos(60) = -1/2.
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✓ Correct Answer: B — -1/2
cos(120) = cos(180 - 60) = -cos(60) = -1/2.
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