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Table 9.5 Math Object Properties (continued)
Property
Value
Description
Math.LOG2E
1.442695040888963387
Log base-2 of E
Math.Log10E
0.4342944819032518167
Log base-10 of E
Math.PI
3.14592653589793116
Pi, ratio of the circumference of a
circle to its diameter
Math.SQRT1_2
0.7071067811865475727
1 divided by the square root of 2
Math.SQRT2
1.414213562373985145
Square root of 2
Table 9.6 Math Object Methods
Method
Functionality
Math.abs(Number)
Returns the absolute (unsigned) value of Number
Math.acos(Number)
Arc cosine of Number , returns result in radians
Math.asin(Number)
Arc sine of Number , returns results in radians
Math.atan(Number)
Arctangent of Number , returns results in radians
Math.atan2(y,x)
Arctangent of y / x ; returns arctangent of the quotient of its
arguments
Math.ceil(Number)
Rounds Number up to the next closest integer
Math.cos(Number)
Returns the cosine of Number in radians
Math.exp(x)*
Euler's constant to some power
Math.floor(Number)
Rounds Number down to the next closest integer
Math.log(Number)
Returns the natural logarithm of Number (base E)
Math.max(Number1, Number2)
Returns larger value of Number1 and Number2
Math.min(Number1, Number2)
Returns smaller value of Number1 and Number2
Math.pow(x, y)
Returns the value of x to the power of y ( x y ), where x is the
base and y is the exponent
Math.random()
Generates pseudorandom number between 0.0 and 1.0
Math.round(Number)
Rounds Number to the closest integer
Math.sin(Number)
Arc sine of Number in radians
Math.sqrt(Number)
Square root of Number

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