Function tan() calculates the tangent value of a radian.

Arguments：

• Radian <number>

Returns：

• Tangent <number>, ∈ [-1, 1]

Common Usage

Example: calculate the tangent value of the radian 45°

return tan(45 * pi() / 180)

Example: calculate the tangent values of a column of radians

uncollect [1, 2.5, 3] as a
return tan(a)