dart:math

tan function

double tan (

1. num radians

)

Converts radians to a double and returns the tangent of the value.

The tangent function is equivalent to sin(radians)/cos(radians) and may be infinite (positive or negative) when cos(radians) is equal to zero. If radians is not a finite number, the result is NaN.

Implementation

external double tan(num radians);