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ZBasic System Library 56 ZX Microcontroller Family Cos Type Function returning Single Invocation Cos(arg) Parameter Method Type Description arg ByVal Single The angle, in radians, of which the cosine will be computed. Discussion The return value will be the cosine of the supplied value, ranging from –1.0 to 1.0. Example Const pi as Single = 3.14159 Dim val as Single val = Cos(pi) ' result is –1.0 See Also Acos,