Trigonometryhard · Past Paper
Express sin 3θ in terms of sin θ.
A3 sin θ - 4 sin³ θ
B4 sin³ θ - 3 sin θ
C3 sin³ θ - 4 sin θ
D3 sin θ + 4 sin³ θ
✓ Correct Answer: A — 3 sin θ - 4 sin³ θ
Standard triple angle formula for sine.
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