Trigonometry - Deriving the Sum and Difference Formulas Part 3 - tan(u+v) and tan(u-v)
Channel: Tutor Terrific
Date: 30/11/2018

In this video, we will finish with part 3 of our sum and difference formula derivations by deriving tan(u+v) and tan(u-v) formulas.  These formulas are a foundation in analytic trigonometry.   This proof will make clever use of the results from part 1 and 2 of our series.

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