tan function Null safety

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);