SHIP:Sail:acos

Function	Returns	Introduced	Description
acos	Float	v5.1.0	Returns the radians angle of a value that is in the range of -1 to +1

See Also:

• Sail Home
• Sail Functions
• Sail Numeric Functions
• Sail Trigonometric Functions

Prototype

Float acos(Float value);

Parameters/Return Value

Parameter	Data Type	Description
value	Float	the value, from range -1 to +1, to take the arccos of
Return	Float	acos(value)

Detailed Description

The acos() function returns the arccos of the supplied value within the range of -1 to +1. If you want to return an angle in degrees you can use toDegrees(acos(value))

Examples

Example	Result	Notes
toDegrees(acos(1/2));	90
toDegrees(acos(sqrt(2)/2));	45
toDegrees(acos(sqrt(3)/2));	30
toDegrees(acos(2));	nan