Python math.acos() Method
Example
Find the arc cosine of different numbers:
# Import math Library
import math
# Return the arc cosine
value of numbers
print (math.acos(0.55))
print (math.acos(-0.55))
print (math.acos(0))
print (math.acos(1))
print (math.acos(-1))
Try it Yourself »
Definition and Usage
The math.acos()
method returns the arc
cosine value of a number.
Note: The parameter passed in acos() must lie between -1 to 1.
Tip: -1 will return the value of PI.
Syntax
math.acos(x)
Parameter Values
Parameter | Description |
---|---|
x | Required. A number to find the arc cosine of, in the range -1 to 1. If the value is outside -1 to 1, it returns a ValueError. If the value is not a number, it returns a TypeError |
Technical Details
Return Value: | A float value, representing the arc
cosine of a number |
---|---|
Python Version: | 1.4 |