(i) Express as a product of two trigonometric factors. (ii) Using the result of part…

MATHEMATICS · Subjective · A Level · Mathematics · Trigonometry · Trigonometry

Problem

(i) Express

\cos5\theta-\cos\theta

as a product of two trigonometric factors. (ii) Using the result of part (i), solve the equation

\cos5\theta-\cos\theta=0

for

0<\theta<2\pi

.

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