How do i solve the equation: 3 cos x - sin x/2 - 1 = 0 in the interval 0<x<720 Thx!
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Hi $\displaystyle \cos x = 1 - 2\sin^2\left(\frac{x}{2}\right)$ which leads to a quadratic in $\displaystyle \sin\left(\frac{x}{2}\right)$
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