b = cos(s) : computes the cosine of iData object @iData/cos function to compute the cosine of data sets (using radians). input: s: object or array (iData) output: b: object or array (iData) ex: b=cos(a); Version: Aug. 22, 2017 See also iData, iData/cos, iData/acos, iData/sin, iData/asin, iData/tan, iData/atan