acos

Returns the angle whose cosine is the value passed as the argument.

acos(number) → returns numeric

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See Also:   asin   atn   cos   exp   log   log10   sin   tan

Argument Reference

number numeric
Required

The value to be converted into an angle. Must be between -1 and 1.

Examples
Sample code invoking the acos function 

acos(0.3)

Expected Result: 1.266103672779

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