I am asked to solve the taylor expansion of sin x around the point -pi/4 to the fourth term.(adsbygoogle = window.adsbygoogle || []).push({});

I got sin(-pi/4)+cos(-pi/4)(x+pi/4)-.5sin(-pi/4)(x+pi/4)^2-1/6(cos(-pi/4)(x+pi/4)^3 but I am getting it wrong and can't see my mistake.

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# Unable to solve taylor series

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