For , how many solutions satisfy…

MATHEMATICS · Single correct · AP · AP Precalculus · Trigonometric and Polar Functions · Trigonometric and Polar Functions

Problem

For 0≤x<2π0 \le x < 2\pi, how many solutions satisfy sin⁡2x+sin⁡4x=0\sin 2x + \sin 4x = 0? (a) 66 (b) 88 (c) 77 (d) 99

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