Returns in radians the arc sine of a numeric expression.

ASIN(nExpression)

Parameters

nExpression

Specifies the numeric expression whose arc sine ASIN( ) returns. The value of nExpression can range from +1 through –1, and the value ASIN( ) returns can range from –pi/2 through +pi/2 ( –1.57079 to 1.57079). The number of decimal places in the display of the result can be specified with SET DECIMALS.

Return Value

Remarks

Example

	Copy Code
CLEAR ? RTOD(ASIN(0)) && Returns 0.00 STORE 1 to gnArcAngle ? RTOD(ASIN(gnArcAngle)) && Returns 90.00 ? RTOD(ASIN(SQRT(2)/2)) && Returns 45.00

See Also

Reference

SIN( ) Function
COS( ) Function
ACOS( ) Function
TAN( ) Function
ATAN( ) Function
ATN2( ) Function
DTOR( ) Function
RTOD( ) Function
PI( ) Function
SET DECIMALS Command

Concepts

Creating Numeric Expressions

Other Resources

Functions
Language Reference (Visual FoxPro)