ObjectScript Reference \$ZCOT Cotangent function.
Synopsis
`\$ZCOT(n)`
Parameter
 n An angle in radians.
Description
\$ZCOT returns the trigonometric cotangent of n. The result is a signed decimal number.
Parameter
n
An angle in radians, specified as a nonzero value. It can be specified as a value, a variable, or an expression. A value of 0 generates an <ILLEGAL VALUE> error. A non-numeric string is evaluated as 0.
Examples
The following example permits you to compute the cotangent of a number:
```   READ "Input a number: ",num
IF num=0 { WRITE !,"zero is an illegal value" }
ELSE {
WRITE !,"the cotangent is: ",\$ZCOT(num)
}
QUIT```
The following example compares the results from InterSystems IRIS fractional numbers (\$DECIMAL numbers) and \$DOUBLE numbers:
```  WRITE !,"the cotangent is: ",\$ZCOT(1.0)
WRITE !,"the cotangent is: ",\$ZCOT(\$DOUBLE(1.0))
WRITE !,"the cotangent is: ",\$ZCOT(-1.0)
WRITE !,"the cotangent is: ",\$ZCOT(\$DOUBLE(-1.0))
WRITE !,"the cotangent is: ",\$ZCOT(\$ZPI/2)
WRITE !,"the cotangent is: ",\$ZCOT(\$DOUBLE(\$ZPI)/2)```
Note that the cotangent of pi/2 is a fractional number, not 0.
See Also

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Content Date/Time: 2019-08-22 06:48:58