Trigonometryhard · Past Paper
Solve: sin 10 sin 30 sin 50 sin 70
A1/8
B1/16
C3/16
D1/4
✓ Correct Answer: B — 1/16
sin 30 = 1/2. sin 10 sin 50 sin 70 = 1/4 sin(3*10) = 1/4 * 1/2 = 1/8. Total = 1/2 * 1/8 = 1/16.
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✓ Correct Answer: B — 1/16
sin 30 = 1/2. sin 10 sin 50 sin 70 = 1/4 sin(3*10) = 1/4 * 1/2 = 1/8. Total = 1/2 * 1/8 = 1/16.
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