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can u write the question again looks confusing the way you wrote it???
cross product of two vectors?
1st of all a should be caps because its a variable ...
ps i should have put "a" in quotes my bad
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
@ParthKohli yes its a cross product of two vectors
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
can I solve like that?
\[0\times-2 + a\times 1 - 1\times 1=0\]
\[a = 1\]Easy as that.
So are we not using the (-1,3,5)
so the answer be 1 right?
and thnx a lot
please try your method and cross-check
i don't think so that goona work
@ParthKohli How these vector are orthognal?
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
yes, exactly :)
clever though :), I would have tediously done the cross product