TAN

• Source: https://www.freebasic.net/wiki/wikka.php?wakka=KeyPgTan
• Last revised: 2018-04-16

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Returns the tangent of an angle

Syntax

` declare function Tan ( byval angle as double ) as double

`

Usage

` result = Tan( angle )

`

Parameters

angle

the angle (in radians)

Return Value

Returns the tangent of the argument angle as a Double within the range of -infinity to infinity.

Description

The argument angle is measured in radians (not degrees).

The value returned by this function is undefined for values of angle with an absolute value of 2 ^ 63 or greater.

Tan can be overloaded as operator to accept user-defined types.

Examples

start GeSHi

Const PI As Double = 3.1415926535897932
Dim a As Double
Dim r As Double
Input "Please enter an angle in degrees: ", a
r = a * PI / 180    'Convert the degrees to Radians
Print ""
Print "The tangent of a" ; a; " degree angle is"; Tan ( r )
Sleep

end GeSHi

The output would look like:

Please enter an angle in degrees: 75
The tangent of a 75 degree angle Is 3.732050807568878

Differences from QB

• None

See also

• Atn
• Atan2
• Sin
• Cos
• A Brief Introduction To Trigonometry

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