PreCalculus - Trigonometry: Trig Identities (15 of 57) Proof of the Addition Formula (Tangent)

Описание к видео PreCalculus - Trigonometry: Trig Identities (15 of 57) Proof of the Addition Formula (Tangent)

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In this video I will prove the trigonometric addition formula for tangent: tan(A+B)=(tanA+tanB)/(1-tanAtanB).

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