# How solve Derivatives of Trigonometric Functions? PLEASE HELP

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I Do not remember how solve this........

I Do not remember how solve this........

##### 2 Answers

Apr 6, 2017

I tried changing the

#### Explanation:

I would use the Quotient and Chain Rule and remember that

So:

Apr 8, 2017

Here I used Chain Rule successively:-

#### Explanation:

Now Differentiating both sides with respect to