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p5.js | asin() function

  • Last Updated : 10 Apr, 2019

The asin() function in p5.js is used to calculate the inverse of sine (arc sine). If the input value range is -1 to 1 then it returns the range between -π/2 to π/2.


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Parameters: This function accepts a single parameter value which stores the domain of asin() function.

Return Value: It returns the arc sine of given value.

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

Example: This example uses asin() function to get arc sine of a value.

function setup() { 
    // Create Canvas of given size
    createCanvas(550, 130); 
function draw() { 
    // Set the background color 
    // Initialize the parameter
    // with some values
    let a = 0; 
    let b = 1; 
    let c = -1;
    let d = 0.5;
    let e = 5;
    // Call to asin() function 
    let v = asin(a);
    let w = asin(b);
    let x = asin(c);
    let y = asin(d);
    let z = asin(e);
    // Set the size of text 
    // Set the text color 
    // Getting arc sine value 
    text("Arc sine value of 0 is : " + v, 50, 30);
    text("Arc sine value of 1 is : " + w, 50, 50);
    text("Arc sine value of -1 is : " + x, 50, 70);
    text("Arc sine value of 0.5 is : " + y, 50, 90);
    text("Arc sine value of 5 is : " + z, 50, 110);     


Note: If the value is greater than 1 or less than -1 then it returns NaN.


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