JoshTheEngineer | Proof: Angle Difference Trig Identities (SIN and COS) @JoshTheEngineer | Uploaded June 2016 | Updated October 2024, 1 hour ago.
In this video I go through the proof for the angle difference identities for both sine and cosine. We will need to know the angle sum identities, so if you want a proof of those, watch this video:
goo.gl/Uzp7bM
In this video I go through the proof for the angle difference identities for both sine and cosine. We will need to know the angle sum identities, so if you want a proof of those, watch this video:
goo.gl/Uzp7bM