(i) Rewrite the expression in product form. (ii) Hence solve the equation for all…

MATHEMATICS · Subjective · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

(i) Rewrite the expression cos⁡2x+cos⁡6x\cos 2x+\cos 6x in product form. (ii) Hence solve the equation cos⁡2x+cos⁡6x=0\cos 2x+\cos 6x=0 for all real xx.

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