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tan		function

Syntax:
theTangent# = tan(expr)

Description:
Returns the tangent of expr, where expr is given in radians. tan always returns a double-precision result.

Note:
To find the tangent of an angle degAngle which is given in degrees, use the following:
   theTangent# = tan(degAngle * pi# / 180)
where pi# equals 3.14159265359.

See Also:
atn; sin; cos