04-16-13 01:17 AM
51 123
  1. delanyinspiron6400's Avatar
    Calculator a little wrong-img_00000026.png

    I love my Z10 and B10, but what's up with that? Sin(2pi) not 0?

    Posted via CB10
    04-15-13 09:41 AM
  2. delanyinspiron6400's Avatar
    Meant to say BB 10

    Posted via CB10
    04-15-13 09:42 AM
  3. bobshine's Avatar
    Ha... nice observation. that is weird

    Posted via CB10
    04-15-13 09:46 AM
  4. amiitoj's Avatar
    Enter your numbers in degrees rather than radians !

    Posted via CB10
    SDTRMG, 3rdStone and agp101 like this.
    04-15-13 09:50 AM
  5. Prince Radebe's Avatar
    Its 0 if you working with radians. When working with Degrees or Gradians then the answer is right...
    rizaru_rin and SDTRMG like this.
    04-15-13 09:56 AM
  6. bobshine's Avatar
    My math is really rusty but I tried in degree and it gives the same result

    Posted via CB10
    04-15-13 09:56 AM
  7. agp101's Avatar
    Weird.. in degrees it gives me the same answer, but in radians it gives me 0.
    I just tried it on my trusty math calculator and I actually get the same exact results. I'm a little confused.

    Posted via CB10
    04-15-13 10:07 AM
  8. Christo Mitov's Avatar
    Like other people have mentioned here, you need to be in radians mode, sin(2*pi) is basically sin(360) in degree mode, since pi = 180 degrees.
    SDTRMG, thecurryman and bquinney like this.
    04-15-13 10:13 AM
  9. Douken's Avatar
    Like other people have mentioned here, you need to be in radians mode, sin(2*pi) is basically sin(360) in degree mode, since pi = 180 degrees.

    Posted via CB10
    04-15-13 10:33 AM
  10. agp101's Avatar
    Like other people have mentioned here, you need to be in radians mode, sin(2*pi) is basically sin(360) in degree mode, since pi = 180 degrees.
    But wouldn't P(x,y) be (1,0) at sin(2pi)? I just finished my precalculus courses and am moving on to calculus, so I'm simply trying to figure this out for myself if someone is willing to shed some brief light on the matter.

    Edit : added post below to explain results.

    Posted via CB10
    Last edited by agp101; 04-15-13 at 11:04 AM.
    04-15-13 10:47 AM
  11. slparry's Avatar
    If it helps the Playbook does the same

    Calculator a little wrong-img_00000055.jpg
    04-15-13 10:51 AM
  12. overzeer's Avatar
    0 radians = 0 degrees = 0 gradians
    Pi radians = 180 degrees = 200 gradians
    2*Pi radians = 360 degrees = 400 gradians

    Sin(n*pi radians) = sin(n*180 degrees) = sin(n*200 gradians)

    You have to be in the right mode, using the right unit.

    Posted via CB10
    04-15-13 10:51 AM
  13. borceg's Avatar
    Click that Rad button and you'll get your correct result.
    agp101 likes this.
    04-15-13 10:55 AM
  14. agp101's Avatar
    Wow seems a slow morning for me. Obviously 2pi is a radian measure, so you will get the correct answer if you enter the calculator in radian mode. 2pi is 360 degrees so in degree measure, it will also show 0. Etc etc.

    Slowww morning.

    Posted via CB10
    04-15-13 11:03 AM
  15. canderson85's Avatar
    Ummm what language is this thread?

    ... battery pull??

    Posted via CB10
    04-15-13 11:12 AM
  16. parkinfly's Avatar
    So you're saying I get 2pi(e)s if I have a z10?
    bp3dots, jrlong and SDTRMG like this.
    04-15-13 11:18 AM
  17. Brandon Orr's Avatar
    Education for the win!!
    SDTRMG likes this.
    04-15-13 11:22 AM
  18. George Jenkinson's Avatar
    That's about the sum of it....
    04-15-13 11:24 AM
  19. anon(5624621)'s Avatar
    So can we get the thread title changed before the media reports that BlackBerry can't program a calculator app?

    Posted via CB10
    SDTRMG, bobshine and Gomark75 like this.
    04-15-13 11:29 AM
  20. BadGoliath42's Avatar
    The OP obviously never used a calculator to calculate angles... and probably doesn't understand what he's doing when doing sin(2*pi).

    Agree, should change the thread title, it's misleading.

    Posted via CB10
    04-15-13 11:38 AM
  21. agp101's Avatar
    So you're saying I get 2pi(e)s if I have a z10?
    No you get 0 because sin 2 pi equals 0 haha (in radian measure, lol)

    / math joke

    I actually have to go study for my math final now which is coming up at the end of the week, ironically.

    Posted via CB10
    SDTRMG likes this.
    04-15-13 11:38 AM
  22. moyjoy's Avatar
    Reading this thread makes me feel smart.

    Posted via CB10
    SDTRMG likes this.
    04-15-13 12:04 PM
  23. grumpyaeroguy's Avatar

    You're clearly in [deg] mode, as, numerically, 2*Pi is approx 6.2831. Thus, sin(6.2831 [deg]) is approx 0.1094. As you know, 2Pi [rad] is equivalent to zero deg, meaning that sin(0[deg]) should calculate out to zero. Once you put it in [rad] mode, sin(2Pi [rad]) will equal zero.

    The calculator is not a "little" wrong. It's very "right". It did EXACTLY what you (maybe inadvertantly) told it to do. Happens to the best of us...

    19GhostRider71 likes this.
    04-15-13 12:40 PM
  24. 4abetterworld's Avatar
    Guys, the math statement written above i interpreted by the computer as sin(2*"value of pi") or sin(6.28... degrees!) if you want the result to be 0 you need to switch the calculation mode to radians...
    04-15-13 12:43 PM
  25. mabbasr's Avatar
    Where is the percentage button?

    Posted to CB via Z 10
    04-15-13 12:54 PM
51 123

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