Quick Reference
The MySQL ACOS() function returns the arc cosine of a number. The specified number must be between -1 and 1, or NULL will be returned.
SELECT ACOS(0.44);
Output
ACOS(0.44)
1.1151976533990733
Syntax
ACOS(number)
SQL Notes:
- Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup
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