Deriving the Derivative Formulas for Tangent, Cotangent, Secant, Cosecant.
Many people memorize these formula but do not really understand where they come from. I show how you just use the derivative formulas for sine and cosine along with the quotient rule and chain rule to derive the rest!
Tagged under: math,calculus,prove,derive,derivative,tangent,trig,trigonometric,AP,BC
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