Tan

Home › Mathematical Functions › Tan

Tan

Returns the tangent of an angle in radians.

Syntax

Declare Function Tan ( ByVal angle As Double ) As Double

Parameters

• angle

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.

Return Value

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

Remarks

Usage

result = Tan( angle )

Differences from QB

• None

See also

• Atn
• Atan2
• Sin
• Cos

Examples

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

The output would look like:

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

---

Category: Mathematical Functions
Kind: function

---

Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.