ACOS

ACOS

Synopsis

ACOS(x)

Description

ACOS function calculates the arc cosine of x; that is the value whose cosine is x.

  • The value it returns is in radians.
  • If x falls outside the range -1 to 1, ACOS returns the #NUM! error.
  • This function is Excel compatible.

Examples

ACOS(0.1) equals 1.470629.

ACOS(-0.1) equals 1.670964.

See also

COS, SIN, DEGREES, RADIANS.