In this video, I explain how to use Pythagorean identities to simplify trigonometric expressions. We focus on substituting 1-sin²θ with cos²θ to make the equation easier to work with, verifying the ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. OK, so I've been learning about Pythagoras, and the dirt on him is just too good. You've probably heard ...