Answers for "math sin in js"

sin in javascript

Math.sin(Math.PI / 2);//it uses radians, pi/2 = 90 degrees, output:1
//make a function 
const DegToRad = num => {return num * Math.PI / 180;};
Math.sin(DegToRad(90));//now its easy to read, output still 1

javaScript Math.sin()

Math.sin(90 * Math.PI / 180);     // returns 1 (the sine of 90 degrees)