The value of $\cos(x + 60^\circ) + \cos(x - 60^\circ… |

Q16MCQ1 mark2023 · Annual

Question

\cos(x + 60^\circ) + \cos(x - 60^\circ)

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Topics and outcomes this question is testing.

Apply fundamental law and its deductions to derive: Trigonometric ratios of allied angles, double angle, half angle and triple angle identities.

Express the product (of sines and cosines) as sums or differences (of sines and cosines).