### Derivative of Trig Functions

The derivatives of trigonometric functions are the rates of change of the values of trigonometric functions with respect to their inputs. The derivatives of the …

The product rule is a rule in calculus that states how to differentiate the product of two functions. The product rule states that the derivative of the product of two functions, say f(x) and g(x), is equal to the derivative of the first function times the second function plus the first function times the derivative of the second function.