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StepMaths Mock Paper 2 · Q3

Paper 2TrigonometryAlgebra

How many solutions are there to the equation cos⁡3(x)−5cos⁡2(x)2+2cos⁡(x)−12=0\cos^3(x)-\dfrac{5\cos^2(x)}2+2\cos(x)-\dfrac12=0 for 0<x<2π0<x<2\pi?

A00
B22
C33
D44
E66

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