Let ` vec a , vec b a n d vec c` be three vectors having magnitudes 1, 5and 3, respectively, such that the angel between ` vec aa n d vec bi stheta` and ` vec axx( vec axx vec b)=c` . Then `t a ntheta` is equal to a. 0 b. 2/3 c. 3/5 d. 3/4

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

For any two vectors vec a\ a n d\ vec b , fin d\ ( vec axx vec b). vecbdot

If vec a\ a n d\ vec b are unit vectors such that vec axx vec b is also a unit vector, find the angle between vec a\ a n d\ vec bdot

Vector vec a,vec b and vec c are such that vec a+vec b+vec c=vec 0 and |a|=3,|vec b|=5 and |vec c|=7. Find the angle between vec a and vec b.

The magnitude of vectors vec A, vec B and vec C are 3, 4 and 5 units respectively. If vec A + vec B= vec C , the angle between vec A and vec B is

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,vec b,vec c are the position vectors of points A,B,C and D respectively such that (vec a-vec d)*(vec b-vec c)=(vec b-vec d)*(vec c-vec a)=0 then D is the

If magnitudes of vectors vec A, vec B and vec C are 5, 4 and 3 units respectively and vec A = vec B + vec C , then angle between vec A and vec B is

If vec a,vec b,vec c are unit vectors such that vec a*vec b=0=vec a*vec c and the angle between vec b and vec c is pi/3, then the value of |vec a xxvec b-vec a xxvec c| is 1/2 b.1 c.2 d.none of these

vec a , vec b , vec c are three coplanar unit vectors such that vec a+ vec b+ vec c=0. If three vectors vec p , vec q ,a n d vec r are parallel to vec a , vec b ,a n d vec c , respectively, and have integral but different magnitudes, then among the following options, | vec p+ vec q+ vec r| can take a value equal to a. 1 b. 0 c. sqrt(3) d. 2