Y = sin(X)
Y = sinh(X)
sin(X) is the circular sine of the elements of X.
sinh(X) is the hyperbolic sine of the elements of X.
sin(pi) is not exactly zero, but rather a value the size of the floatingpoint accuracy, eps, because pi is not exactly equal to pi .
acos,asin,atan,cos,exp,expm,funm,tan
(c) Copyright 1994 by The MathWorks, Inc.