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Is there a cis (CosX + iSinX) Button in CASIO graphic calculators ? if so where its ? if no is there any turn around for it ?

PS. I got a CASIO fx-9860G


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I have the CFX-9850G, awesome calculators! :) –  FundThmCalculus Dec 10 '14 at 3:41

2 Answers 2

up vote 4 down vote accepted

From the instruction manual:

product of two polar-form complex numbers

So, entering 2∠30 is equivalent to entering $2\text{ cis }30°$.

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Cheers!!! Thanks alot ! –  omeid Mar 13 '11 at 13:14
Plus one for RTFM! –  Milo Jun 26 '14 at 7:47

$cis(x)$ is equal to $e^{ix}$.

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Thanks for your answer I tried to put e^i(n) and it returns error on Casio. :( –  omeid Mar 2 '11 at 6:04
Have you turned on complex mode on the calculator? (Set up $\to$ Complex Mode). When does it return an error? In the graph mode? –  please delete me Mar 2 '11 at 7:14

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