Proving Trigonometric Identity Tip: Always Work from the Left-Hand Side to the Right-Hand Side
Channel: Andrew Misseldine
Date: 2021-05-20

In this video, we practice proving basic trigonometric identities and illustrate the following tip: When proving an identity, always work on ONE side of the equation at a time, that is, transform the LHS into to the RHS or transform the RHS into the LHS. NEVER use any operations that involve both sides of the equation at the same time.

This is lecture 15 (part 3/6) of the lecture series offered by Dr. Andrew Misseldine for the course Math 1060 - Trigonometry at Southern Utah University. A transcript of this lecture can be found at Dr. Misseldine's website or through his Google Drive at: https://drive.google.com/file/d/12DJl9_ES6J4nqME9yMFOvqbzS1ZZ4dGA/view

This lecture is based upon general college trigonometry curriculum and not based upon an individual textbook. With that said, this lecture series is influenced by many great trigonometry textbooks on the market, namely Sullivan's, Stewart's, OpenStax's, McKeague's, Stitz-Zeager's, and many others. Please post any questions you might have below in the comment field and Dr. Misseldine (or other commenters) can answer them for you. Please also subscribe for further updates.