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in Trigonometric Functions by (46.2k points)

If sin A = 3/4 than value of sin 3A will be:

(A) 9/16

(B) – 9/16

(C) 9/32

(D) 7/16

1 Answer

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by (47.9k points)
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Best answer

Answer is (A)

sin 3A

3 sin A – 4 sin3 A

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