Acos

Description of formula:
Calculates the arccosine of a specified number. Arccosine is the angle, whose cosine is equal to value passed as a parameter, e.g.
acos(-1) = π, because cos(π) = -1
The returned value is given in radians, in range from 0 to π.

Syntax:
acos(number)

Parameters:

number

(type: Number) The cosine of the angle. Must be between -1 and 1.

Returned type:

Number

Examples:
=acos(-1)
=acos(Section1.A1)
=acos(A)
=acos(B3)

Remarks:
If you want to get value in degrees, multiply the result by 180/pi().