Atnfunction

Returns the arctangent of a number

Syntax

Declare Function Atn ( ByVal number As Double ) As Double

Parameters

Return value

The angle, in radians, whose tangent is number, in the range [-Pi/2..Pi/2].

Description

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

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

Remarks

Usage


result = Atn( number )


Differences from QB

• None
  
  

See also

• Tan
  
• Atan2
  
• A Brief Introduction To Trigonometry
  
  

Example

Print "Pi ="; Atn ( 1.0 ) * 4

Print Atn ( 4 / 5 )

The output would be:

Pi = 3.141592653589793
0.6747409422235527

Reference

• Documented in KeyPgAtn.html