Trigonometryhard · Past Paper
Simplify: (sin 3A + sin A) / (cos 3A + cos A).
Atan A
Btan 2A
Ccot 2A
Dsin 2A
✓ Correct Answer: B — tan 2A
Using CD formulas: (2 sin 2A cos A) / (2 cos 2A cos A) = tan 2A.
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