Trigonometryhard · Past Paper
Simplify: (sin 5A - sin 3A) / (cos 5A + cos 3A).
Atan A
Btan 2A
Ccot A
Dcot 4A
✓ Correct Answer: A — tan A
Using CD formulas: (2 cos 4A sin A) / (2 cos 4A cos A) = sin A / cos A = tan A.
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✓ Correct Answer: A — tan A
Using CD formulas: (2 cos 4A sin A) / (2 cos 4A cos A) = sin A / cos A = tan A.
Share this question