Re: Can't remember how to get trig functions to work HP15 Message #2 Posted by Tom Sherman on 6 Oct 2005, 10:39 a.m., in response to message #1 by Pete Dzwonkas
Pete,
I think that at some point you hit f[TAN] instead of TAN and put your calculator in complex mode. A little c will show on the lower right of the screen if this is the case. In complex mode, the calculator assumes radian mode even though RAD does not show on the screen. To clear the complex mode, hit g[CF]8. Your trig functions should then work as you expect them to.
Cheers, Tom
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