ErinWeeks
  • ErinWeeks
Find the unit vector that has the same direction as the vector v. v = 3i + j
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
ErinWeeks
  • ErinWeeks
@AkashdeepDeb or @Psymon can you help?? (:
Psymon
  • Psymon
Yep. So just like we did in the last problem, we need the magnitude first. Which means we do m^2 = i^2 + j^2. Once you get the magnitude, divide both i and j by that magnitude. So your final answer looks like this: \[\frac{ vector (v) }{ ||v|| }\]
AkashdeepDeb
  • AkashdeepDeb
Exactly! Because Magnitude . Unit vector = Actual vector! So unit Vector = Actual Vector/Magnitude !! :D

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

Psymon
  • Psymon
I need to brb, though. So if you got any questions just bug @AkashdeepDeb Ill be back xD
AkashdeepDeb
  • AkashdeepDeb
-.-
AkashdeepDeb
  • AkashdeepDeb
@ErinWeeks Did you get it though?
AkashdeepDeb
  • AkashdeepDeb
@ErinWeeks ?
AkashdeepDeb
  • AkashdeepDeb
?
ErinWeeks
  • ErinWeeks
sorry i was playing call of duty :0 lol not really because i dont get what to plug in
AkashdeepDeb
  • AkashdeepDeb
What is the magnitude of the vector?
AkashdeepDeb
  • AkashdeepDeb
@ErinWeeks ?
ErinWeeks
  • ErinWeeks
uhm im honestly not sure im looking in my book trying to see
ErinWeeks
  • ErinWeeks
wouldnt it be 3?
AkashdeepDeb
  • AkashdeepDeb
It'd be sqrt 10 @Psymon 'd explain :D
Psymon
  • Psymon
Sorry if I wasnt clear before about it. The magnitude is the length of the vector. And that length is found using: \[(magnitude)^{2} = i ^{2}+j ^{2} \]. Its the same thing as pythagorean theorem, a^2 + b^2 = c^2, its just different letters. So to get magnitude, lets check. i is 3, j is 1 \[m ^{2}=3^{2}+1^{2}\] \[m ^{2}=9 + 1\] \[m ^{2}=10 -> m = \sqrt{10}\] That kind of make sense?
Psymon
  • Psymon
@AkashdeepDeb I wasnt out to just volunteer you earlier, you were already here and I had to brb xD
AkashdeepDeb
  • AkashdeepDeb
Yeah I get it! But then he/she started playing call of duty or some game. XD
Psymon
  • Psymon
Magnitude of the stray bullet shot into the enemy player?
ErinWeeks
  • ErinWeeks
yea i makes more sense but now thats not the final answer .. & sorrry i was playing the new dlc maps :O
Psymon
  • Psymon
Right, thats just the magnitude. To get a unit vector, we divide i and j by the magnitude. \[\frac{ i }{ magnitude }+\frac{ j }{ magnitude }\] \[= \frac{ 3i }{ \sqrt{10} }+\frac{ j }{ \sqrt{10} } \] And that would be the unit vector we want.
ErinWeeks
  • ErinWeeks
oh okay i see i got it..
Psymon
  • Psymon
mhm ^_^ Glad it makes sense.
ErinWeeks
  • ErinWeeks
it actually makes alot more sense
AkashdeepDeb
  • AkashdeepDeb
http://www.indianfunpic.com/wp-content/uploads/2013/07/Give-That-man-a-Medal.jpg
Psymon
  • Psymon
Oh, and theres a way to check and see if its a unit vector, too :3

Looking for something else?

Not the answer you are looking for? Search for more explanations.