Derivatives: Trig Functions

In this video we will first see the derivative rule for the trigonometric functions. Then, we will see the proofs for these rules. Finally, we will see a quick example of using the derivative of one of the trig functions.

Derivative Rules: 0:25
Proof d/dx sin(x)=cos(x): 2:21
Proof d/dx cos(x)=-sin(x): 6:03
Proof d/dx tan(x)=sec^2(x): 7:58
Proof d/dx cot(x)=-csc^x(x): 9:57
Proof d/dx sec(x)=sec(x)tan(x): 11:32
Proof d/dx csc(x)=-csc(x)cot(x): 14:43
Example: 17:30