Reference/atan

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atan (arc tangent function)

The atan function computes the arc tangent of its argument; that is the value whose tangent is the given argument. The result is in radians and lies between -PI/2 and PI/2 (the range is approximate due to rounding errors).

Syntax

q)a:atan 0.5

Example

q)atan 0.5
0.4636476
q)atan 42
1.546991

See also


For a complete list of functions, see the kdb+ Function Reference.

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