$ZCSC
Cosecant function.
Synopsis
$ZCSC(n)
Parameter
| Argument | Description |
|---|---|
| n | An angle in radians. |
Description
$ZCSC returns the trigonometric cosecant of n. The result is a signed decimal number.
Parameter
n
An angle in radians, specified as a nonzero number. It can be specified as a value, a variable, or an expression. Specifying 0 generates an <ILLEGAL VALUE> error; specifying $DOUBLE(0) generates a <DIVIDE> error. A non-numeric string is evaluated as 0.
Examples
The following example permits you to compute the cosecant of a number:
READ "Input a number: ",num
IF num=0 { WRITE !,"ILLEGAL VALUE: zero not permitted" }
ELSE {
WRITE !,"the cosecant is: ",$ZCSC(num)
}
QUIT
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The following example compares the results from Caché fractional numbers ($DECIMAL numbers) and $DOUBLE numbers. In both cases, the cosecant of pi/2 is exactly 1:
WRITE !,"the cosecant is: ",$ZCSC($ZPI) WRITE !,"the cosecant is: ",$ZCSC($DOUBLE($ZPI)) WRITE !,"the cosecant is: ",$ZCSC($ZPI/2) WRITE !,"the cosecant is: ",$ZCSC($DOUBLE($ZPI)/2) WRITE !,"the cosecant is: ",$ZCSC($DOUBLE($ZPI/2))
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