If ` vec r` is a vector of magnitude 21 and has direction ratios `2,-3a n d6,` then find ` vec rdot`

If vecr is a vector of magnitude 21 and has direction ratios proportional to 2,-3,6 then vecr is equal to

If vec(A) is a vector of magnitude 3 units due east. What is the magnitude and direction of a vector -4vec(A) ?

vec(A) is a vector with magnitude A, then the unit vector hat(A) in the direction vec(A) is

If a vector vec r of magnitude 3sqrt(6) is directed along the bisector of the angle between the vectors vec a=7vec i-4vec j-4vec k and vec b=-2vec i-vec j+2vec k, then vec r is equal to

A vector vec r has length 21 and its direction ratios are proportional to 2,-3,6. Find the direction cosines and components of vec r ,is given that vec r Makes an acute angle with x- axis.

Two vectors vec a&vec b have equal magnitudes of 10m, Find the magnitude and direction of the resultant vector.

Find the angle between two vectors vec a\ a n d\ vec b with magnitudes 1\ a n d\ 2 respectively and when | vec axx vec b|=sqrt(3)dot

If vec a\ a n d\ vec b are two vectors of magnitudes 3 and (sqrt(2))/3 respectively such that vec axx vec b is a unit vector. Write the angle between vec a\ a n d\ vec bdot

A vecto vec A has magnitude 2 and another vector vec B has magnitude 3 . They are perpendicular to each other. By vector diagram, find the magnitude of vec A + vec B and dhow its direcction in the diagram.

The magnitude of vector vec A is 2.5 metre and is directed towards east. What will be the magnitudes and directions of the following: 2.5 vec A