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If sin θ = 1/2, what is 3 sin θ − 4 sin³θ?
A1
B0
C1/2
D3/2
Answer & Solution
Correct answer: A. 1
3 sin θ − 4 sin³θ is sin 3θ; with sin θ = 1/2 it is 3/2 − 1/2 = 1.
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