StrictMath sin() Method in Java

The java.lang.StrictMath.sin() is an in-built function in Java which returns the trigonometric sine of an angle.

Syntax:

public static double sin(double ang)

Parameters: This function accepts a single parameter ang which is a double variable which represents an angle (in radians) whose trigonometric tangent is to be returned by the function.

Return Value: This method returns the sine of the angle passed as argument to the function. The following cases are considered :

• The function returns NaN if the argument is NaN or infinity.
• The function returns zero with the sign same as that of the argument if the argument is zero.

Examples:

Input : ang = 0.5235987755982988(30 degree)
Output : 0.49999999999999994

Input : ang = 0.7853981633974483(45 degree)
Output : 0.7071067811865475

Below programs illustrate the working of java.lang.StrictMath.sin() function in Java:

Program 1:

// Java Program to illustrate sin()
import java.io.*;
import java.math.*;
import java.lang.*;

class GFG {
    public static void main(String[] args)
    {

        double ang = (60 * Math.PI) / 180;

        // Display the trigonometric sine of the angle
        System.out.println("Sine value of 60 degrees : "
                                 + StrictMath.sin(ang));
    }
}

Output:

Sine value of 60 degrees : 0.8660254037844386

Program 2:

// Java Program to illustrate sin()
import java.io.*;
import java.math.*;
import java.lang.*;

class GFG {
    public static void main(String[] args)
    {

        double ang = 77.128;
        // Convert the angle to its equivalent radian
        double rad = StrictMath.toRadians(ang);
        System.out.println(rad);

        // Display the trigonometric sine of the angle
        System.out.println("Sine value of 77.128 degrees : "
                                     + StrictMath.sin(rad));
    }
}

Output:

1.3461375454781863
Sine value of 77.128 degrees : 0.9748701783788553

Reference: https://docs.oracle.com/javase/8/docs/api/java/lang/StrictMath.html#sin()