Trigonometrymedium · Past Paper
Simplify 3 sin A - 4 sin^3 A.
Asin 2A
Bsin 3A
Ccos 3A
D3 sin A
✓ Correct Answer: B — sin 3A
This is the standard triple angle formula for sine.
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✓ Correct Answer: B — sin 3A
This is the standard triple angle formula for sine.
Share this question