COT

Returns the co-tangent of its argument

Implemented by: dartmouth4, ansifull, bw32

With variations:

Also written as:

The BASIC Cookbook points out that BASICs which don't implement the function can achieve the same results, for a given X argument, with the following formula:

1/TAN(X)

• TRACTON, Ken. The BASIC Cookbook, 1st edition. Tab Books. USA, 1978.