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C2 Trig

Solve, for 0≤x≤2π0 \leq x \leq 2\pi

2cos⁡(x−π4)=32 \cos(x-\frac{\pi}{4})=\sqrt{3}

I get the answers x=5π12,19π12 x=\frac{5\pi}{12}, \frac{19\pi}{12}
But the book says the answers are x=5π12,π12x=\frac{5\pi}{12}, \frac{\pi}{12}

Help please?

EDIT: Realised my errors!
(edited 11 years ago)

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