UniBasic Commands Reference - Rocket Software

ASIN
Syntax
ASIN(expr)
Description
The UniBasic ASIN function returns the trigonometric arc sine (inverse sine) of a
numeric expression. expr must be a value between -1 and +1. ASIN returns a value
expressed as the degree of the arc sine of the input, which ranges from -90 to +90. If
expr evaluates to a value outside the range of -1 and +1, the UniData displays an error
message and returns 0 as the result.
With null value handling on, the result of any mathematical operation, function, or
comparison involving the null value is the null value. Therefore, ASIN returns the
null value when expr is the null value.
Examples
In the following example, the program statement assigns 30, the arc sine of 0.5, to
ARCSIN:
ARCSIN = ASIN(0.5)
In the next example, the program statement prints -30, the arc sine of -0.5:
PRINT ASIN(-0.5)
Related Commands
ACOS, ATAN, COS, SIN, TAN
1-106 UniBasic Commands Reference