tan

returns the tangent of an angle (in radians).

# Metadata

Platforms: desktop, server, mobile OS: mac, windows, linux, ios, android Introduced: 1.0 Security:

# Syntax

the tan of angleInRadians

# Params

- angleInRadians : A positive or negative number, or an expression that evaluates to a number.

# Examples

put tan(pi/4) -- returns 1

put the tan of tMyAngle

# Description

Use the tan function to find the tangent of an angle.

The tan function repeats every 2 ** *pi radians: tan(x) = tan(x + 2 * pi), for any value of x.

If the angleInRadians is an odd multiple of pi/2, the tangent is infinite (undefined). The tan function instead returns a very large number for such angles, due to internal number handling.

The tan function requires its input to be in radians. To provide an angle in degrees, use the following custom function:

function tanInDegrees angleInDegrees return tan(angleInDegrees * pi / 180) end tanInDegrees

# Tags

math,

# See

- **constant:** pi - **glossary:** radian, custom function, return, degree - **control structure:** function