In this Example we will convert 90 degrees to radians . Firstly we will see angle to radians formula then use it .
Note : 90 degrees is equal to π/2 radian .
How to Convert from Degrees to Radians
To convert from degrees to radians , we use given below formula .
Angle in radian = Angle in degree x (π/180)
90 degrees to radians
We will use above given formula to calculate how many radians is 90 degrees . In this example value of angle is 90 .
Now Angle in radian = Angle in degree x (π/180)
Angle in radian = 90 x (π/180)
Angle in radian = π/2
Hence, 90 degrees is equal to π/2 in radian .
As we now that value of π(PI) is 3.14159 then use this value
Angle in radian = 3.14159/2
Angle in radian = 1.570795
So, 90 degrees is equal to 1.570795 radian .
Now we will write a java program to convert 90 degrees to radian .
Java program to Convert 90 degrees to radians
Math.toRadians() method converts the given angle from degrees to radians format.
Syntax :
Math.toRadians(double angdeg)
Parameters:
It takes angdeg an angle, in degrees
Returns:
It returns the measurement of the angle angdeg in radians.
Now we will use Math.toRadians() method to convert degree to radians . toRadians() is a static method .So we can call it directly with class name and it will return degree value in radians .
public class DegreesToRadians {
public static void main(String[] args) {
double deg = 90;
System.out.println("90 Degrees in radians: "+Math.toRadians(deg));
}
}
Output :
90 Degrees in radians: 1.5707963267948966
In this tutorial we learned how to convert 90 degrees to radians . We got answer what is 90 degrees in radians in this example . Learn more java program for practice .