HP Forum Archive 10

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Re: pi sin() on HP-32S? Message #1 Posted by Tomas on 19 Jan 2003, 12:16 p.m. When I take the sin of pi on my HP 49g, in RAD mode, I get an answer of 0.But my 48gx gives me -2.067154E-13. My 49 has serial nr Cn1480xxxx, could it have been some software changes with my 49g?

Re: pi sin() on HP-32S? Message #2 Posted by Ben Salinas on 25 Jan 2003, 12:04 a.m., in response to message #1 by Tomas Yes, I have noticed severe innacuracies with the 32sII's Radian mode. It converts from degrees fine, but when you use trig functions, it seems to not give you zero when it should. I tend to convert radian measures to degrees for trig functions -ben

Re: pi sin() on HP-32S? Message #3 Posted by hugh on 25 Jan 2003, 9:44 a.m., in response to message #2 by Ben Salinas this isnt a bug. this actual case is explained in the manual (see faq) the answer given is correctly, sin(3.141592654) != 0 i know this can be a bit confusing.

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