Section 3.5 derivatives of trig functions

 

o      

o      

o      

o        is the derivative of       

o        is the derivative of     

o             

o            

o       NEED TO KNOW!! (Memorize)

 

 

 

 

Examples:

 

Example1:

 

*       

*   

 

 

 

 

 

 

 

 

Example 2:

 

                    

          

 

 

 

Example 3:

       

 

    

 

    

 

 

 

 

the answer is 1/2