i need one last help

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i need one last help

Mathematics
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|dw:1355995034204:dw|
2sin(theta)^2+square root of 3 times sine (theta)=0
\(2\sin^2 x+\sqrt{3sin x}=0\) right ?>

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for some reason tis site is not letting use the equation button
\[2 \sin^2(\theta) + \sqrt{3 \cdot \sin(\theta)} = 0\]
Reload your page.
\[2sine(\theta)^{2}+\sqrt{3}sine(\theta)=0\] i got for theta 0, 180, and 300
sin x(2sin x+sqrt 3)=0 sin x = 0 ---- > x=0,180,360 sin x =-sqrt 3/2 ----> x=.... ?
what? i am, lost
i got -60
\[\sin x(2\sin x+\sqrt{ 3})=0\] Here just put the factors equal to 0 separately..
0 and 360 is the same exaxt degree. there suppose to be 4 solutions
\[\sin(-60) = - \frac{\sqrt{3}}{2}\] Yes you are right..
then you add 360. you get back to 300.
yes, u get 2 solutions for sin x = -sqrt 3/2
Generally you can find them using : \[x = n \pi + (-1)^n y\]
whar are the 2 solution? i only can get 3. how u get the 4th one?"
See here : \[\sin(x) = \sin(-\frac{\pi}{3})\]
So : According to that general form : \[x = n \pi + (-1)^n (-\frac{\pi}{3})\]
Now, here n is an integer, you can put n = 1, 2,3 etc or you can put -1, -2 -3 etc.. To find the required solution..
i domt see anything o.o
For example : Put n = 0 here : \[x = - \frac{\pi}{3}\]
Again refresh your page so see here LATEX..
i did
man i onmly got 3 degrees
What you got as your solutions tell me?
0, 180 and 300
Wait, put n= 2 there and tell me what are you getting??
Is there any range given to you in which you are to find these solutions?? Like 0 to 360..
Are you not getting 240 as one of its solutions?
Not interested in replying ?? @Venomblast
that what im looking for. i got 0 which is the same as 360 degrees and 180
openstudy didnt want to put up my post for like 8 min
Is there any range in which you are to find the solutions or not??
can you tell me the solution. im so sleepy. i dont know the answer and i really want ot know but it 5:06 am
Yes I am telling you the answer..
then what is it?
So, when you will wake up and come on openstudy next time, answer I will tell you then definitely.. So sleep well...
just tell me. i have to hand this in.
I do not have power to tell you the answer only.. I have given you the formula above just put up the values of n there you will surely have your answer..
im not use to thqt formula. you learn it differently from me
Sorry, if you want help then I can help you.. So, try to understand what I am saying to you..
I agree I have studied it different from you... But what is the problem you are facing in using the formula, tell me..
See, if you do it now on your own, then next time you need not to ask it from anybody.. So, keep it up and solve it, I know you can do.. When problem you will face, then let me know..
i dont understand it
i did do it on my own. dude. i got 3 answes out of 4.i havnt slept yet and my next class is at 8 am
I am just saying you to just put n = 2 here : \[x = n \pi + (-1)^n (- \frac{\pi}{3})\]
See, if your next class is at 8 am, then it is not my fault.. I can't do anything in this...
i never seen this formula in my life.
But you will see surely and soon..
how do u know. i leanr it differenltly. i cutally have to draw the circle
See, I tell you how you got 300 there : Put n= 2 here : \[x = (2) \pi + (-1)^2 (-\frac{\pi}{3})\] \[x = 2\pi - \frac{\pi}{3} \implies \color{red}{x = \frac{5 \pi}{3} = 300}\]
Now, simply put n = 1 in the formula to get the required solution..
woa.. but i told you already. i already got 300 as my asnwer|dw:1355998903609:dw|
Nice answer.. Well Done..
woa.. but i told you already. i already got 300 as my asnwer
this website need to be better
  • hba
@waterineyes Good for nothing. Ha Ha Ha...
I just showed you, mathematically How you got 300..
ok. but how you get the rest. i just need 1 more degree
Dear, put n = 1 there in the formula.. Why aren't you plugging n = 1 there ??
bnut that will jsut get me 300no?
  • hba
@waterineyes You are not helping Ha Ha Ha,...
No, that will not give you 300.. Try that once.
Yeah.. But I am still trying..
He has done everything, but he does not want to put n = 1 there..
  • hba
\[x = (2) \pi + (-1)^2 (-\frac{\pi}{3})\] put n=1 @Venomblast
2pi/3
\[x = (1) \pi + (-1)^1 (-\frac{\pi}{3})\]
-2pi/3
\[x = \pi + \frac{\pi}{3} = ??\]
  • hba
4/3 pi *
Nice @hba \[\frac{4 \pi}{3} = ??\]
  • hba
4*180/3=
i need the degree. not the redian.
nvm i will just ask someon eelse.
  • hba
240 degree.
I am just saying convert that radian into degrees..
that maa work. why cant u justuse the circle.
I think, @hba is more helpful than me..
  • hba
  • hba
@waterineyes I am useless lol :D Not helpful :P
how u got 240. did you add 180 or something? becuase it has to be in quad 3 right. but how?
See : \[\frac{\pi}{3} = 60\] Right ??
i had -60. so i added 360. and i got 300 degrees. so now how did you get 240?
  • hba
It is in 3rd quad. |dw:1356000009002:dw|
sorry i dont use radians to figure this problem. i told u . i use the actualt cricle
|dw:1356000136227:dw| but how you got 240?
simple buddy.. 300 - 60 = 240. Ha ha ha ha @hba
Tell me sine is negative in which quadrants??
  • hba
@waterineyes Let me summarize trig Ha Ha Ha...
  • hba
|dw:1356008695751:dw|
|dw:1356009445331:dw|
wow, that was almost too painful to read ;)
  • hba
@amistre64 lol :P

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