alleryThe value of cos(-π/3) is:
A-√3/2
B-1/2
C1/2
D√3/2
Answer & Solution
Correct answer: C. 1/2
cos is an EVEN function: cos(-x) = cos x.
We have **So cos(-π/3) = cos(π/3).
So **So cos(-π/3) = 1/2.**.
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