 
The expression you have used with the arc cosine function has a value out of the range of – 1.0 to +1.0.
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| Visual FoxPro 9.0 |
| Expression used with ACOS( ) is out of range (Error 293) |
 
The expression you have used with the arc cosine function has a value out of the range of – 1.0 to +1.0.
js editor
Web development