cos

public static double cos(double x)

The cosine of the number. The returned value will be between -1 and 1 (inclusive).

Parameters

x

The number to get the cosine of (expressed in radians).

Returns the cosine for a number (expressed in radians).

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import System;   Console.log(Math.cos(0));       // 1 Console.log(Math.cos(Math.PI)); // -1 Console.log(Math.cos(0.5));     // 0.8775825618903728