## DERIVATIVE OF TRIGONOMETRIC FUNCTIONS

### Formulae of "The derivatives of Trigonometric Functions "

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**Illustrative Examples**

Find the first derivative of the given trigonometric function.In the given example y = sin 5x, u = 5x. We can use the relationship "

*i*" provided above.

Above show the first approach as we derive the u.

Having the relationship derivative of sinu = cosu.

Arrived at the final answer.