Trigonométrie

Formules de base

Formules de base

`sin^2α + cos^2α = 1`

`sec^2α + tan^2α = 1`

`csc^2α - cot^2α = 1`

`tan α * cot α = 1`

`tan α = sin α / cos α`

`cot α = cos α / sin α`

`tan^2α + 1 = 1 / cos^2α`

`cot^2α + 1 = 1 / sin^2α`