The Math.atan( ) function in JavaScript is used to return the arctangent of a number in radians.
Math.atan(x)=arctan(x)=unique y,where y belongs to [-pi/2;pi/2] such that tan(y)=x
The Math.atan() method returns a numeric value between -pi/2 and pi/2 radians.
atan() is a static method of Math, therefore, it is always used as Math.atan(), rather than as a method of a Math object created.
Syntax:
Math.atan(value)
Parameters Used:
Value:A number in radians who arctangent you want to find.
Return Value:
The Math.atan() function returns the arctangent of the given number in radians.
Examples:
Input : Math.atan(1) Output : 0.7853981633974483 Input : Math.atan(0) Output : 0 Input : Math.atan(-0) Output : -0 Input : Math.atan(Infinity) Output : 1.5707963267948966 Input : Math.atan(-Infinity) Output : -1.5707963267948966
- When 1 is passed as a parameter.
<
script
type
=
"text/javascript"
>
document.write("Output : " + Math.atan(1));
</
script
>
Output:
Output : 0.7853981633974483
- When 0 is passed as a parameter.
<
script
type
=
"text/javascript"
>
document.write("Output : " + Math.atan(0));
</
script
>
Output:
Output : 0
- When -0 is passed as a parameter.
<
script
type
=
"text/javascript"
>
document.write("Output : " + Math.atan(-0));
</
script
>
Output:
Output : -0
- When Infinity is passed as a parameter.
<
script
type
=
"text/javascript"
>
document.write("Output : " + Math.atan(Infinity));
</
script
>
Output:
Output : 1.5707963267948966
- When -Infinity is passed as a parameter.
<
script
type
=
"text/javascript"
>
document.write("Output : " + Math.atan(-Infinity));
</
script
>
Output:
Output : -1.5707963267948966
This article is attributed to GeeksforGeeks.org
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- When 0 is passed as a parameter.
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