ResearchFlatMoon | The Tale of Four Triangles | Tangents @ResearchFlatMoon | Uploaded September 2021 | Updated October 2024, 1 hour ago.
We continue our path from last week, now getting the tangent of two angles. We look at the 4 triangle proof using algebra, trig and geometry to prove the theorem.

Remember to hit 'Like' and 'Subscribe', your support of this channel is appreciated.