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But, wouldn't that mean that the 48 series shared the same trig bugs as the 35S?
Edited: 28 Apr 2012, 8:31 p.m.
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Yes, most calculators using CORDIC algorithms for their trigonometric and inverse trigonometric functions. HP used them starting with the 9100A desktop computer in 1968 through some of their latest calculators. I don't know whether CORDIC is used in the relatively recent HP-branded calculators that were not actually developed by HP.