Mathematics, 07.02.2022 21:10 hewonabi123

100 POINTS AND BRAINLIEST!! PRE CALC! The trigonometric relation cos (π/3 + x) + cos (π/3 - x) is equivalent to:

a. cos 2x
b. cos x
c. sin x
d. 1/2 cos x

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100 POINTS AND BRAINLIEST!! PRE CALC! The trigonometric relation cos (π/3 + x) + cos (π/3 - x) is...