Calculus 5.5 Derivatives of Tangent and Cotangent Functions
Channel: Ms Havrot's Canadian University Math Prerequisites
Date: 06/03/2020

Using your skills from 5.4 you can easily find the derivatives of these functions in a pinch without even having memorized them.
Easy calculation!  Still use the EFA rule when necessary.  I also do question 6 from your homework from this section.