p5.js | sin() function

The sin() function in p5.js is used to calculate the sine value of an angle in radians taken as the input parameter of the function and gives the result in between -1 to 1.

Syntax:

sin( angle )

Parameters: This function accepts a single parameter angle which is an angle in radian whose sine value is calculated.



Return Value: It returns the sine value of an angle in radian taken as the input parameter.

Below program illustrates the sin() function in p5.js:

Example: This example uses sin() function to get sine value of an angle in radian.

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function setup() { 
   
    // Create Canvas of size 270*80 
    createCanvas(550, 130); 
   
function draw() { 
       
    // Set the background color 
    background(220); 
       
    // Initialize the parameter with
    // angles in radian only
    let a = 0; 
    let b = 8.9; 
    let c = 47;
    let d = 5;
       
    // Call to sin() function 
    let v = sin(a);
    let w = sin(b);
    let x = sin(c);
    let y = sin(d);
       
    // Set the size of text 
    textSize(16); 
       
    // Set the text color 
    fill(color('red')); 
     
    // Getting sine value 
    text("Sine value of angle 0 (in radian) is : " + v, 50, 30);
    text("Sine value of angle 8.9 (in radian) is : " + w, 50, 50);
    text("Sine value of angle 47 (in radian) is : " + x, 50, 70);
    text("Sine value of angle 5 (in radian) is : " + y, 50, 90);     

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Output:

Note: In the above code, the input angle should be in radian. For converting the degree into radian use the following formula:

Angles_in_radian = (π/180)*angles_in_degree

Reference: https://p5js.org/reference/#/p5/sin



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