Mathematical constants and its values used in JavaScript

Math constants

There are several constants used in JavaScript which we can use in our calculation. Let us see how to calculate the perimeter of a circle of radius 2 meter.

document.write ( " Perimeter of a circle of diameter 2 meter = " + Math.PI*2 + " meter ");

Output of this is here

Perimeter of a circle of diameter 2 meter = 6.283185307179586 meter

There are few more constants and here is the list.

Constants	Description
Math.PI	Value is 3.141592653589793. This is the value of PI used trigonometry
Math.E	Value is 2.718281828459045, known as Euler's constant
Math.LN2	Equal to 0.6931471805599453, natural logarithm of 2
Math.LN10	Equal to 2.302585092994046 natural logarithm of 10
Math.LOG2E	Equal to 1.4426950408889633 base 2 logarithm of E
Math.LOG10E	Equal to 0.4342944819032518 base 10 logarithm of E
Math.SQRT2	Equal to 1.4142135623730951 square root of 2
Math.SQRT1_2	Equal to 0.7071067811865476 square root of 1/2

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