The values of \( \theta \) satisfying \( \sin 7 \theta=\sin 4 \theta-\sin \theta \) and \( 0\the...
The values of \( \theta \) satisfying \( \sin 7 \theta=\sin 4 \theta-\sin \theta \) and \( 0\theta\frac{\pi}{2} \) are
(A) \( \frac{\pi}{9}, \frac{\pi}{4} \)
(B) \( \frac{\pi}{3^{\prime}}, \frac{\pi}{9} \)
(C) \( \frac{\pi}{6}, \frac{\pi}{9} \)
(D) \( \frac{\pi}{3}, \frac{\pi}{4} \)
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