...angle unit in your calculator, any angle returned by an inverse trigonometric function (arcos, arcsin, arctan) is in radian. Set the default angle unit as the one required by your problem at
my casio s/c fx83ES does not have an INV button. Can you help me I depends on what you mean by INV. On some Chinese (AUREX, Staples) calculators the second function key is marked as INV. If that is ...
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