The number of values of in the interval satisfying is:

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

The number of values of xx in the interval [0,3π][0,3\pi] satisfying sin⁡2x+5sin⁡x−3=0\sin^2x+5\sin x-3=0 is: (1) 6 (2) 1 (3) 2 (4) 4

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