Venomblast
  • Venomblast
i need one last help
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1355995034204:dw|
Venomblast
  • Venomblast
2sin(theta)^2+square root of 3 times sine (theta)=0
hartnn
  • hartnn
\(2\sin^2 x+\sqrt{3sin x}=0\) right ?>

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

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