Calculatrice d'Arc Tangente (Arctan) — Formule

Inverse Tangent (Arctan)

Definition

arctan(x) = the angle whose tangent is x

Domain and Range

  • Domain: all real numbers
  • Range: -90° to 90° (-pi/2 to pi/2 radians)

    • Unlike arcsin and arccos, arctan accepts any real number as input.

    Exemple Résolu

    Find arctan(1).

    1. arctan(1) = pi/4 radians
    2. = 45 degrees
    3. Verification: tan(45°) = 1