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MrCarey
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sin(arcsin(11π/13)
I'd really just like an explanation of this one.
 2 years ago
 2 years ago
MrCarey Group Title
sin(arcsin(11π/13) I'd really just like an explanation of this one.
 2 years ago
 2 years ago

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MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I don't know why I'm forgetting how to do this, but it's been awhile and my final is coming up and I want a better understanding of it.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
do you know the init Circle?
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
when you at look the unit circle what quard would Sin be in?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I see that it goes 11π, so I believe it's going clockwise around the unit circle and I think it gets to Q3.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
yes correct, so in the problem what does that tell you?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I don't know...hahaha, rephrase that maybe?
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
from looking at this problem and taking the information you already have what would you say the answer is? sin(arcsin(11π/13)
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
do you understand arcsin and what that means??
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
crap, I wrote it down wrong. It was arcsin(sin(11π/13))
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I have a pretty good understanding of how to use it. I'm rusty, though.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
okay, let us take this and break it down on what you know, you start I will fill in if needed.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I believe sin(ø) = arcsin (11π/13) in this situation.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
you are right, but how did you do that?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I just kind of have that memorized. I guess I never really grasped that...
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
okay, now I have a stupid what is the question asking for??? I am a little lost with the question here does it ask to solve or what?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Find the exact value of the given expression. Simplify your answer (rationalize the denom)
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I also have that the answer is 2π/13
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I don't really understand where the 2π comes from.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
because recall the unit circle has a total of 360 degrees right?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Yep and 2π is 360º
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
2/pie is a point on the Unit the circle in which the angle is 360.. you beat to that one good job
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
So, my picture shows the line 11π/13 and the distance between that line and the 180º line is 2π/13.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Having a hard time understanding why it's 2π and not just π.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Probably just overthinking it.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
what I am questioning here the negative here in this case?
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
because you start with a negative you will most likely end that way..
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
2pie is at the 360 degrees which has points 0,0 so how can that be a negative result help here?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
One sec, gonna post a photo of what is giving me a headache.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
I think we are both getting the same headache on this. This problem is going down..
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Hahaha, I'm tellin' you. I haven't had any problems with any other questions, but this one is just destroying my brain.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
yeah, the same thing only that my brain is dead because I am stuying Vectors myself.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
what I am missing here????
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
is the question still \[\sin (arcsin (11 \pi/3)\]
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
arcsin(sin(11π/3))
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
yes sir, please help me I am getting a major headache here
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Messed up the on the original post
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
here's a hint.. arcsin( sin x) = x sin (arcsin x) = x cos( arc cos x) = x arc cos (cos x) = x tan (arctan x) = x arctan (tan x) = x does that help?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
There is the picture that I was trying to describe.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I wish that helped, but I still can't figure out why it is 2π/13
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
is that included in the question? or is that your solytion?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Solution. It's an answer key and I'm trying to decipher it.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I know it is 2π/13 because of the range, but I don't know where the 2π came from.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
use the hint i gave you...here's a demo \[\sin (\sin^{1} ( \frac{\pi}{2} ) ) = \frac{\pi}{2}\] \[\sin^{1} (\sin ( \frac{2 \pi}{5} ) ) = \frac{2 \pi}{5}\] getting it now?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
\[\sin^{1} (\sin ( \frac{11\pi}{3} ) ) = \frac{11\pi}{3}\] then simplify that you get \[\frac{2\pi}{3}\] make sense?
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
lgbasallote what did I miss here? I mean I thought for sure I was going the right way what did I do in my steps that went wrong here? Help me to understand..
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
How'd you simplify to that?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
i think i wrote the wrong thingies lol...
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
but that's the concept
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Yeah, I knew what you were saying with the others. It's this deal here. I don't understand how it is simplifying from 11π to 2π.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
It's like it just magically disappears.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.1
reference angles
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Heh, I feel dumb for not knowing still.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
Mrcarey I am so sorry I took the long way here.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Haha, no problem at all. I've been at it for so long, it didn't even feel that long.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
ha ha yeah better next time right? HA HA..
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Exactly! Thanks for trying at least. Good luck with the vector calc. I'll be THERE soon enough.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
I am Physics Engineering major myelf
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Mech E. for me. Math math math math and more math!
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
you got this now
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Yeah, I feel better about it. Got one more day of review in class, so I'll probably bring it up with him anyway. Thanks again!
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
do you another problem you need help on? Just asking here
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Nope, this one seemed to be the only one I kept coming back to. This stupid thing made everything else seem easy!
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
yeah, I only hope for me it is just one problem that will allow everything to be easy after that. Fat chance ha ha
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Hahahaha, no way. I've peeked at that stuff and needed to take a nap after.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
did that one already.. I took a 5hrs nap
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
I am doing Calc1 andPhysics 1 with Calc
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
I'll be doing that in the Fall. Well, no Physics yet, couldn't get in the class. General Chem 1 and Calc 1. Gonna be exciting.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
what school?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Doing community for now, so I can transfer to University of Washington Seattle.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
cool I live Iin Portland Ore myself..
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
I will start Sept 24th at Jr College than transfer to Tarleton ST university in TX in Spring 2013
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Awesome, TX should be pretty fun. Definitely a change of scenery.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
I am studying math and Physics by watching videos and taking notes on my own
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Khan Academy?
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
yeah StephenVille is very small town though
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
who is Khan A?
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
www.khanacademy.com MIT grad who made his own site that teaches every kind of math and most sciences.
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Free site for learning. I've used it for awhile now. Especially when I get bad professors.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
funny you just posted MIT, Because I am using thier open courses on line for the video in math and Physics
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Haha, that works, too! You'd probably like his teaching style. He is very helpful and has tons of videos. I always recommend the site.
 2 years ago

godorovg Group TitleBest ResponseYou've already chosen the best response.1
thanks will check it out, hey you have a great night and if you need me to help me message me
 2 years ago

MrCarey Group TitleBest ResponseYou've already chosen the best response.0
Sounds like a plan! Have a good night!
 2 years ago
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