Cos

Returns the cosine of an angle

Syntax
	KeyPgDeclareDeclare KeyPgFunctionFunction Cos ( KeyPgByvalByVal angle KeyPgAsAs KeyPgDoubleDouble ) KeyPgAsAs KeyPgDoubleDouble

Usage
	result = Cos( angle )

Parameters
	angle
		the angle (in radians)

Return Value
	Returns the cosine of the argument angle as a KeyPgDoubleDouble within the range of 
	-1.0 to 1.0.

Description
	The argument number is measured in TutMathAnglesradians (not TutMathAnglesdegrees).

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

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

Example
	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 cosine of a" ; a; " degree angle is"; Cos ( r ) 
	Sleep

Output:

	Please enter an angle in degrees: 30
	The cosine of a 30 degree angle Is 0.8660254037844387

Differences from QB
	* None

See also
	* KeyPgAcosAcos
	* KeyPgSinSin
	* KeyPgTanTan
	* TutMathIntroTrigA Brief Introduction To Trigonometry

