Math — Derivatives of Trig Functions
Standard trigonometric and inverse-trig derivatives.
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\frac{d}{dx}\sin x = \cos x
\frac{d}{dx}\cos x = -\sin x
\frac{d}{dx}\tan x = \sec^2 x
\frac{d}{dx}\arcsin x = \frac{1}{\sqrt{1-x^2}}