$\frac{d}{dx}$ ($\frac{2}{\pi}sin x^o)$

Question

Professor PC Thomas Classes · Answer

Convert to radians: $x^\circ = \frac{\pi x}{180}$. $\frac{d}{dx}(\frac{2}{\pi}\sin(\frac{\pi x}{180})) = \frac{2}{\pi} \cdot \frac{\pi}{180} \cos x^\circ = \frac{1}{90}\cos x^\circ$.