ACOS

The ACOS function returns the inverse cosine of a value in radians.

Sample Usage

ACOS(0)

ACOS(A2)

ACOS(1)

Syntax

ACOS(value)

• value - The value for which to calculate the inverse cosine. Must be between -1 and 1, inclusive.

Notes

• Use the DEGREES function to convert the result of ACOS into degrees.

• Cosine is periodic, therefore there are many solutions to the inverse. ACOS returns the solution between 0 and Pi.

See Also

TANH: The TANH function returns the hyperbolic tangent of any real number.

TAN: The TAN function returns the tangent of an angle provided in radians.

SINH: The SINH function returns the hyperbolic sine of any real number.

SIN: The SIN function returns the sine of an angle provided in radians.

RADIANS: The RADIANS function converts an angle value in degrees to radians.

PI: The PI function returns the value of pi to 9 decimal places.

DEGREES: The DEGREES function converts an angle value in radians to degrees.

COSH: The COSH function returns the hyperbolic cosine of any real number.

COS: The COS function returns the cosine of an angle provided in radians.

ATANH: The ATANH function returns the inverse hyperbolic tangent of a number.

ATAN2: The ATAN2 function returns the angle between the x-axis and a line segment from the origin (0,0) to the specified coordinate pair (`x`,`y`), in radians.

ATAN: The ATAN function returns the inverse tangent of a value in radians.

ASINH: The ASINH function returns the inverse hyperbolic sine of a number.

ASIN: The ASIN function returns the inverse sine of a value in radians.

ACOSH: The ACOSH function returns the inverse hyperbolic cosine of a number.

Examples