Re: Sin[30*Degree] vs Sin[29*Degree]

*To*: mathgroup at smc.vnet.net*Subject*: [mg72091] Re: Sin[30*Degree] vs Sin[29*Degree]*From*: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>*Date*: Mon, 11 Dec 2006 04:55:27 -0500 (EST)*Organization*: The Open University, Milton Keynes, UK*References*: <elglnb$h7f$1@smc.vnet.net>

Steven Shippee wrote: > What is happening here: > > Sin[30*Degree] > Sin[31*Degree] > Sin[29*Degree] > which makes it appear that only the first line of input works? > > However, if I do something like: > > \!\(Sin[\(29*Pi\)\/180. ]\) > > I get the expected result ... I'm sure it is me, what am I missing in that I > think I am not seeing consistent behavior? Exact vs. approximate results. In[1]:= Sin[30*Degree] Sin[31*Degree] Sin[29*Degree] Out[1]= 1/2 Out[2]= Sin[31*Degree] Out[3]= Sin[29*Degree] In[4]:= N[%%] Out[4]= 0.5150380749100542 In[5]:= N[%%] Out[5]= 0.48480962024633706 Regards, Jean-Marc