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Q46. Express cos A + cos 3A as a product.

Mathematics — NUST Mock 5 — Question 46 of 200

A. 2 sin A sin 2A
B. 2 sin A cos 2A
C. 2 sin 2A cos A
D. 2 cos 2A cos A

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Express cos A + cos 3A as a product. | Mathematics MCQ #46 | Examora | Examora