
Calculus,10/E by Howard Anton, Irl
Bivens, and Stephen Davis
Copyright © 2009 by John Wiley & Sons,
Inc. All rights reserved.

The main objective of this section is to
obtain formulas for the derivatives of the
six basic trigonometric functions and
them use them along with the previous
rules in finding derivatives.

There is a proof for the derivative of sin x
on the next page. Please do not just skip
that slide.  Try to follow along. You do
not need to copy it down.

You can prove the derivatives of cos x
and tan x similarly and you will have to
on the test. 

Now use those trig. derivatives along with
the product, quotient, etc rules: