cos

Calculates the cosine of an angle that is entered in radians.

cos(number) → returns numeric

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See Also:   acos   asin   atn   exp   log   log10   sin   tan

Argument Reference

number numeric
Required

The angle, in radians, for which to calculate the cosine

Examples
Sample code invoking the cos function 

cos(0.3)

Expected Result: 0.955336489126

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