MTALHAHASSAN2
  • MTALHAHASSAN2
If (-1,3,5)X (0,a,1)= (-2,1,-1), determine a.
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.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
can u write the question again looks confusing the way you wrote it???
ParthKohli
  • ParthKohli
cross product of two vectors?
anonymous
  • anonymous
1st of all a should be caps because its a variable ...

Looking for something else?

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

More answers

anonymous
  • anonymous
ps i should have put "a" in quotes my bad
anonymous
  • anonymous
Shiz dude I GTG I don't know if your here but send me a message and ill figure it out because I just knowticed is 2:30 and i still got to go over Spanish
MTALHAHASSAN2
  • MTALHAHASSAN2
@ParthKohli yes its a cross product of two vectors
ParthKohli
  • ParthKohli
well one way to think about this is that since the cross-product is orthogonal to (0, a, 1) you can equate their dot product to zero
MTALHAHASSAN2
  • MTALHAHASSAN2
|dw:1450254926959:dw|
MTALHAHASSAN2
  • MTALHAHASSAN2
can I solve like that?
ParthKohli
  • ParthKohli
maybe
ParthKohli
  • ParthKohli
\[0\times-2 + a\times 1 - 1\times 1=0\]
ParthKohli
  • ParthKohli
\[a = 1\]Easy as that.
MTALHAHASSAN2
  • MTALHAHASSAN2
So are we not using the (-1,3,5)
ParthKohli
  • ParthKohli
no
MTALHAHASSAN2
  • MTALHAHASSAN2
so the answer be 1 right?
MTALHAHASSAN2
  • MTALHAHASSAN2
and thnx a lot
ParthKohli
  • ParthKohli
please try your method and cross-check
MTALHAHASSAN2
  • MTALHAHASSAN2
i don't think so that goona work
Er.Mohd.AMIR
  • Er.Mohd.AMIR
@ParthKohli How these vector are orthognal?
baru
  • baru
by definition: cross product of two vectors gives a vector perpendicular to the plane containing the two vectors. if A X B = C then C is perpendicular to both A and B. and we know that the dot product of two vectors is zero B . C=0
ParthKohli
  • ParthKohli
yes, exactly :)
baru
  • baru
clever though :), I would have tediously done the cross product
MTALHAHASSAN2
  • MTALHAHASSAN2
1 Attachment
MTALHAHASSAN2
  • MTALHAHASSAN2

Looking for something else?

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