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OpenStudy (anonymous):
find all solutions in the interval 0, 2pi for sin 2x + sin x =0 0, 2pi/3, pi, 4pi/3
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OpenStudy (mertsj):
1. Replace sin 2x with 2sinxcosx 2. Factor out sinx 3. Set each factor equal to 0 and solve.
OpenStudy (anonymous):
what (7y)-2
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