[delanyinspiron6400]

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


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[delanyinspiron6400]

Meant to say BB 10

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[bobshine]

Ha... nice observation. that is weird

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[amiitoj]

Enter your numbers in degrees rather than radians !

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[Prince Radebe]

Its 0 if you working with radians. When working with Degrees or Gradians then the answer is right...

[bobshine]

My math is really rusty but I tried in degree and it gives the same result

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[agp101]

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.

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[Christo Mitov]

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.

[Douken]

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.

This

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[agp101]

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.


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[slparry]

If it helps the Playbook does the same

[overzeer]

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.

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[borceg]

Click that Rad button and you'll get your correct result.

[agp101]

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.

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[canderson85]

Ummm what language is this thread?

... battery pull??

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[parkinfly]

So you're saying I get 2pi(e)s if I have a z10?

[Brandon Orr]

Education for the win!!

[George Jenkinson]

That's about the sum of it....

[anon(5624621)]

So can we get the thread title changed before the media reports that BlackBerry can't program a calculator app?

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[BadGoliath42]

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.

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[agp101]

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.

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[moyjoy]

Reading this thread makes me feel smart.

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[grumpyaeroguy]

LOL

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...

Cheers

[4abetterworld]

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...

[mabbasr]

Where is the percentage button?

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