Description
Calculates the arccosine of an angle.
Syntax
ACos ( n )
|
Argument |
Description |
|---|---|
|
n |
The ratio of the lengths of two sides of a triangle for which you want a corresponding angle (in radians). The ratio must be a value between -1 and 1. |
Return value
Double.
Returns the arccosine of n.
Examples
This statement returns 0:
ACos(1)
This statement returns 3.141593 (rounded to six places):
ACos(-1)
This statement returns 1.000000 (rounded to six places):
ACos(.540302)
This code in the Clicked event of a button catches a runtime error that occurs when an arccosine is taken for a user-entered value -- passed in a variable -- that is outside of the permitted range:
Double ld_num
ld_num = Double (sle_1.text)
TRY
sle_2.text = string (acos (ld_num))
CATCH (runtimeerror er)
MessageBox("Runtime Error", er.getmessage())
END TRYSee also
ACos method for DataWindows in the section called “ACos” in DataWindow Reference
