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JavaScript - Math.sin in degrees

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Created by:
Root-ssh
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In JavaScript Math.sin() method works using radians by default. To switch it to degrees some simple operation is necessary ((Math.PI / 180) * degrees). In this article we can see custom Math.sin() function that works on degrees.

// ONLINE-RUNNER:browser;

function calculateSine(deg) {
	var radians = (Math.PI / 180) * deg;
  
  	return Math.sin(radians);
}

// Example:

console.log( calculateSine(0)   ); //  0
console.log( calculateSine(30)  ); // ~0.5
console.log( calculateSine(45)  ); //  0.7071067811865475
console.log( calculateSine(60)  ); //  0.8660254037844386
console.log( calculateSine(90)  ); //  1

console.log( calculateSine(180) ); // ~0
console.log( calculateSine(270) ); // -1
console.log( calculateSine(360) ); // ~0

See also

  1. JavaScript - Math.sin() method example

JavaScript - math (popular problems)

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