Mark Wickens

ASN ACS ATN

Purpose

Returns the value of the corresponding inverse trigonometric function value for the argument.

Format

ASN     (argument)
         └──┬───┘ 
   Numeric expression
   
ACS     (argument)
         └──┬───┘ 
   Numeric expression
   
ATN     (argument)
         └──┬───┘ 
   Numeric expression

*The parenthesis enclosing the argument can be omitted when the argument is a numeric value of variable.

Example

ASN(0,1)

Parameters

argument: Numeric expression in the range if -1 ≦ argument ≦ 1 (ASN, ACS)

Explanation

1. Returns the value of the corresponding trigonometric function for the argument.
   • ASN: ARCSINE
   • ACS: ARCCOSINE
   • ATN: ARCTANGENT
2. Function values are returned within the following ranges:
   • -90º ≦ ASN(x) ≦ 90º, 0º ≦ ACS(x) ≦ 180º
   • -90º ≦ ATN(x) ≦ 90º

   • See

     • ANGLE
     • SIN
     • COS
     • TAN

Sample Program

10  ANGLE 1
20  INPUT "INPUT NUMBER (-1 TO 1)="; N
30  PRINT N; "=SIN("; ASN N; "RAD)"
40  PRINT N; "=COS("; ACS N; "RAD)"
50  PRINT N; "=TAN("; ATN N; "RAD)"
60  ANGLE 0: END

Displays trigonometric angles in radians for each input in range of -1 to 1.