p5.js | acos() function

The acos() function in p5.js is used to calculate the arc cosine value. The domain of this function is -1 to +1 and the range is 0 to 3.14.

Syntax:

acos(c)

Parameters: This function accepts single parameter c which stores the value in between -1 to 1.



Below programs illustrate the acos() function in p5.js:

Example 1: This example uses acos() function to calculate arc cosine value.

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function setup() {
  
    // Create Canvas of size 380*80
    createCanvas(380, 80);
}
  
function draw() {
      
    // Set the background color
    background(220);
      
    // Set the angle in radian
    let angle = PI;
      
    // Compute value of cos()
    let c = cos(angle);
  
    // Compute value of acos()
    // It returns the value of PI
    let ac = acos(c);
      
    // Set the font size
    textSize(16);
      
    // Set the font color
    fill(color('red'));
      
    // Display result
    text("Value of acos is : " + ac, 50, 30);
}

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Output:

Example 2: This example uses acos() function to calculate arc cosine value.

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function setup() {
  
    // Create Canvas of given size
createCanvas(380, 80);
}
  
function draw() {
      
    // Set the background color
    background(220);
      
    let c = 0.5;
      
    // Use acos() function to calculate
    // arc cosine value
    let ac = acos(c);
      
    // Set font size
    textSize(16);
      
    // Set font color
    fill(color('red'));
      
    // Display result
    text("Value of acos is : " + ac, 50, 30);
}

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Output:

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



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