Question about Casio FX991ES Scientific Calculator
Problem with converting from pol to rec... trying to convert -0.17-0.47i to polar. instead of getting 0.5,249.6 am getting 0.5,-109.
In the COMP mode (press MODE 1 to get there), press
SHIFT [Pol] (-) . 1 7 SHIFT [,] (-) . 4 7 =
[Pol] is on the "+" key, [,] is on the ")" key.
Posted on Dec 05, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Can I convert Decimal Degrees
Yes. Pressing the DMS key (two keys above the 8 key) when a result is displayed toggles the result between decimal degrees and degrees-minutes-seconds.
For example, to convert 3.5 degrees, press 3 . 5 = and you'll see 3.5. Now press DMS and you'll see 3 degrees 30 minutes 0 seconds.
Posted on Jul 31, 2011
To avoid errors make sure that the angle unit is THE ONE required by your problem. To verify or to change the angle unit press [SIFT][MODE] and select [3: Deg] for degrees, [4:Rad] for radians, or [5:Grad] for grads.
Convert from rectangular to polar
[SHIFT][+] (Pol) . Screen displays Pol(
You enter the X-coordinate, and the Y coordinate separated by a comma, then you close the parenthesis and press [=].
Exemple: Polar coordinate of the point (1,1)
Pol( 1, 1) gives
r=1.414213562 (square root of 2)
Here is how you enter it
[SHIFT][POL] 1 [SHIF] [,] 1 [)] [=]
The screen displays
Convert from polar to rectangular coordinates
Rec ( radius, angle) =
Exemple: Recatngular coordinates of (r=3, θ=60°)
[SHIFT][Rec] 3 [SHIFT][,] 60 [ ) ] [=]
The screen displays
Hope it helps.
Posted on Nov 15, 2009
Testimonial: "thanx that was very helpful"
Examples #036 and #037 in the Appendix illustrate how to convert between polar and rectangular coordinates. If you need the appendix and/or the manual, you can download them from
Posted on May 22, 2011
Tips for a great answer:
Feb 16, 2013 | Casio FX-115ES Scientific Calculator
Dec 07, 2012 | Casio FX-115ES Scientific Calculator
May 09, 2012 | Casio FX991ES Scientific Calculator
Apr 19, 2012 | Casio Algebra FX 2.0 Calculator
May 28, 2010 | Casio FX-115ES Scientific Calculator
Apr 28, 2010 | Casio Algebra FX 2.0 Calculator
Mar 31, 2010 | Casio FX-115ES Scientific Calculator
Jan 19, 2010 | Casio FX-115ES Scientific Calculator
Nov 14, 2009 | Casio FX-115ES Scientific Calculator
Oct 18, 2009 | Casio FX-115ES Scientific Calculator
102 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: