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Solve for $x$ in terms of $\pi$ if: $2\sin^{2}x-\cos x - 1=0$ for $0\leq x \leq 2\pi$
in Mathematics by Diamond (62,244 points) | 31 views

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Use the trig identity of unity first then solve the trig equation as a quadratic equatiion

by Wooden (4,328 points)

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