# `math` — mathematical functions¶

The `math` module provides some basic mathematical functions for working with floating-point numbers.

## Constants¶

`math.``e`

base of the natural logarithm

`math.``pi`

the ratio of a circle’s circumference to its diameter

## Functions¶

`math.``acos`(x)

Return the inverse cosine of `x`.

`math.``asin`(x)

Return the inverse sine of `x`.

`math.``atan`(x)

Return the inverse tangent of `x`.

`math.``atan2`(y, x)

Return the principal value of the inverse tangent of `y/x`.

`math.``ceil`(x)

Return an integer, being `x` rounded towards positive infinity.

`math.``copysign`(x, y)

Return `x` with the sign of `y`.

`math.``cos`(x)

Return the cosine of `x`.

`math.``degrees`(x)

Return radians `x` converted to degrees.

`math.``exp`(x)

Return the exponential of `x`.

`math.``fabs`(x)

Return the absolute value of `x`.

`math.``floor`(x)

Return an integer, being `x` rounded towards negative infinity.

`math.``fmod`(x, y)

Return the remainder of `x/y`.

`math.``frexp`(x)

Decomposes a floating-point number into its mantissa and exponent. The returned value is the tuple `(m, e)` such that `x == m * 2**e` exactly. If `x == 0` then the function returns `(0.0, 0)`, otherwise the relation `0.5 <= abs(m) < 1` holds.

`math.``isfinite`(x)

Return `True` if `x` is finite.

`math.``isinf`(x)

Return `True` if `x` is infinite.

`math.``isnan`(x)

Return `True` if `x` is not-a-number

`math.``ldexp`(x, exp)

Return `x * (2**exp)`.

`math.``modf`(x)

Return a tuple of two floats, being the fractional and integral parts of `x`. Both return values have the same sign as `x`.

`math.``pow`(x, y)

Returns `x` to the power of `y`.

`math.``radians`(x)

Return degrees `x` converted to radians.

`math.``sin`(x)

Return the sine of `x`.

`math.``sqrt`(x)

Returns the square root of `x`.

`math.``tan`(x)

Return the tangent of `x`.

`math.``trunc`(x)

Return an integer, being `x` rounded towards 0.