Let be a vector coplanar with the vectors and . If is perpendicular to and •= 24, then is equal to :
84
336
315
256
As we have learned.
Vector Product of two vectors(cross product) -
If and are two vectors and is the angle between them , then
- wherein
is unit vector perpendicular to both
Scalar Product of two vectors (dot product) -
- wherein
is the angle between the vectors
Here
Here
Thus
Option 1)
84
Option 2)
336
Option 3)
315
Option 4)
256
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