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Clavis TMUA Set C Paper 1 · Q18

Paper 1TrigonometryFunctions & graphs

Find the sum of all the solutions of

∣2cos⁡x∣=1|2\cos x|=1

in the range 0≤x≤2π0\leq x\leq2\pi.

A3π3\pi
B4π4\pi
C5π5\pi
D6π6\pi
E7π7\pi
F8π8\pi

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