00:01
Let's solve the given question as according to the question in part a.
00:04
A vector is equals to minus 8 comma 3 comma 7.
00:08
B vector is equals to 6 comma minus 7 comma 1.
00:13
Now, a1 comma b1 comma c1 is equals to minus 8 comma 3 comma 7.
00:23
A2 comma b2 comma c2 is equals to 6 comma minus 7 comma 1.
00:31
So now, a1 a2 plus b1 b2 plus c1 c2 is equals to minus 48 minus 21 plus 7 is not equals to 0 and a1 divided a2 is equals to b1 divided b2 is equals to c1 divided c2 is not hold.
01:02
Hence, vectors are neither orthogonal nor parallel.
01:20
Now, moving to the part b of this question, then according to this in the part b, a vector is equals to 6 comma 6, b vector is equals to minus 3 comma 3 means this is a1, this is b1, this is a2, this is b2.
01:48
So now, a1 a2 plus b1 b2 is equals to minus 18 plus 18 is equals to 0.
02:00
Hence, vectors are parallel.
02:07
Now, moving to the part c of this question, then according to the part c, vector a is equals to minus i cap plus 4 j cap plus 4 k cap...