Tangent of the difference of two angles formula

Abbreviation:

ljctan

Category:

Trigonometry

Tangent of the difference of two angles is equal to the difference of the tangent of the two angles over the sum of 1 and the product of the two angles' tangent.

\tan(\alpha -\beta) = \dfrac{\tan \alpha - \tan \beta }{1+\tan \alpha\tan \beta}