p5.js | asin() function

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.

Syntax:

asin(value)

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
    background(220);

    // 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
    textSize(16);

    // Set the text color
    fill(color('red'));

    // 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);
}

Output:

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

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