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Beyond Horizon Set 1 Paper 1 · Q11

Paper 1TrigonometryAlgebra

How many real solutions does the equation 2sin⁡3(x)−6sin⁡(x)cos⁡2(x)+sin⁡(x)=02\sin^3(x)-6\sin(x)\cos^2(x)+\sin(x)=0 have in the interval 0<x<2π0<x<2\pi?

A11
B22
C33
D44
E55
F66

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