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cos

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Purpose

Get the cosine of a value.

Synopsis

function cos(r:real):real

Argument

r	Real number to which to apply the trigonometric function

Return value

Cosine value of the argument.

Example

The function tangent can be implemented as follows:

function tangent(x:real):real
 returned:=sin(x)/cos(x)
end-function

Related topics

arctan, sin.

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