What is tan() in D?
The tan() function returns the tangent of a number in radians.
The mathematical representation of the tan() function is shown below.
Note:
- The
std.mathlibrary is required for this function.- The
tan()function only works for right-angled triangles.
Syntax
tan(number)
//number can be real, float, or double.
Parameter
This function requires a number that represents an angle in radians.
In order to convert degrees to radians, use the following formula:
Return value
The tan() function returns the tangent of the number that is sent as a parameter.
Example
The following code shows how to use the tan() function in D.
import core.stdc.stdio;import std.stdio;//header required for functionimport std.math;int main(){//positive number in radianswriteln("The value of tan(2.3) ", tan(2.3));// negative number in radianswriteln("The value of tan(-2.3) ", tan(-2.3));//converting the degrees angle into radians and then applying tan()// degrees = 45.0// PI = 3.14159265// result first converts degrees to radians then apply tandouble result=tan(45.0 * (PI / 180.0));writeln("The value of tan(45.0 * (PI / 180.0)) ", result);return 0;}
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