Need some help on this one. Just not sure where to go, used Sum to Product. That just confused me even more. If someone could show me a couple of step that would be great. thanks. 2cosΘ+sin2Θ = 2cos^3Θ/ 1-sinΘ
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$\displaystyle 2cosx +sin(2x) = 2cosx+2sin(x)cos(x) = 2cosx(1+sinx)$ Then multiply $\displaystyle 2cosx(1+sinx)$ by $\displaystyle \dfrac{(1-sinx)}{(1-sinx)}$
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