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()
