Acos
 
Finds the arccosine of an angle

Syntax

Declare Function Acos ( ByVal number As Double ) As Double

Usage

result = Acos( number )

Parameters

number
A cosine value in the range [-1..1].

Return Value

The arccosine of number, in radians, in the range [0..Pi].

Description

Acos returns the arccosine of the argument number as a Double within the range of 0 to Pi. The arccosine is the inverse of the Cos function. The returned angle is measured in radians (not degrees).

Example

Dim h As Double
Dim a As Double
Input "Please enter the length of the hypotenuse of a triangle: ", h
Input "Please enter the length of the adjacent side of the triangle: ", a
Print ""
Print "The angle between the sides is"; Acos ( a / h )
Sleep

The output would look like:
Please enter the length of the hypotenuse of a triangle: 5
Please enter the length of the adjacent side of the triangle: 4

The angle between the sides is 0.6435011087932843

Dialect Differences

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

Differences from QB

  • New to FreeBASIC

See also