Asin

Home › Mathematical Functions › Asin

Asin

Returns the angle in radians, from -pi/2 to pi/2, whose sine is the number.

Syntax

Declare Function Asin ( ByVal number As Double ) As Double

Parameters

• number

Description

Asin returns the arcsine of the argument number as a Double within the range of -Pi/2 to Pi/2. The arcsine is the inverse of the Sin function. The returned angle is measured in radians (not degrees).

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

Return Value

The arcsine of number, in radians, in the range [-Pi/2..Pi/2].

Remarks

Usage

result = Asin( number )

Dialect Differences

• Not available in the -lang qb dialect unless referenced with the alias __Asin.

Differences from QB

• New to FreeBASIC

See also

• Sin

Examples

Dim h As Double

Dim o As Double

Input "Please enter the length of the hypotenuse of a triangle: ", h

Input "Please enter the length of the opposite side of the triangle: ", o

Print ""

Print "The angle between the sides is"; Asin ( o / h )

Sleep

The output would look like:

Please enter the length of the hypotenuse of a triangle: 5
Please enter the length of the opposite side of the triangle: 3
The angle between the sides is 0.6435011087932844

---

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.