Rockwell Automation 1746-BAS BASIC LANGUAGE - Manual (Page 30)

Publication 1746-RM001A-US-P
3-8 Expressions and Operators
Trigonometric Operators The module contains a complete set of trigonometric operators. These operators
are single-operand operators.
SIN([expr])
Use the SIN operator to return the sine of the argument. The argument is
expressed in radians. Calculations are carried out to 7 significant digits. The
argument must be between +200000.
COS([expr])
Use the COS operator to return the cosine of the argument. The argument is
expressed in radians. Calculations are carried out to 7 significant digits. The
argument must be between +200000.
TAN([expr])
Use the TAN operator to return the tangent of the argument. The argument is
expressed in radians. The argument must be between +200000.
ATN([expr])
Use the ATN operator to return the arctangent of the argument. The result is in
radians. Calculations are carried out to 7 significant digits. The ATN operator
returns a result between –PI/2 (3.1415926/2) and PI/2.
Example Result
>PRINT SIN(PI/4) .7071067
>PRINT SIN(0) 0
Example Result
>PRINT COS(PI/4) .7071067
>PRINT COS(0) 1
Example Result
>PRINT TAN(PI/4) 1
>PRINT TAN(0) 0
Example Result
>PRINT ATN(PI) 1.2626272
>PRINT ATN(1) .78539804