Arc cosine of a complex number

Calculator for calculating the inverse cosine of a complex number

Arc cosine calculator

The function returns the angle, which is the arc cosine of a complex number representing a cosine. The angle is given in radians.

To perform the calculation, enter the complex number. Then click on the 'Calculate' button.

Arc cos complex number calculator

Complex number +  i
Decimal places

Description of the arccosine

The arc cosine ( Arccos or Acos ) is the inverse of the cosine function. As their inverse functions, the arc cosine returns the associated angle from the cosine value.

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