3.2B Finding Increasing and Decreasing Intervals of Trig Functions

My AP Calculus Course: https://www.youtube.com/c/MrHelpfulNotHurtful/playlists?view=50&sort=dd&shelf_id=1 Watch this video first. It shows you how to find increasing and decreasing intervals of regular functions. https://youtu.be/-gADa6QqzRw