If `veca and vecb` asre two vectors such that `|veca|=2, |vecb|`= 7 and `vecaxxvecb=3hati+6hatk` find the angle between `veca and vecb`

If |veca|=2,|vecb|=7 and (vecaxxvecb)=3hati+2hatj+6hatk find the angle between veca and vecb

If veca and vecb are two such that |veca|=5, |vecb|=4 and |veca.vecb|=10 , find the angel between veca and vecb and hence find |vecaxxvecb|

If veca,vecb are two unit vectors such that |veca + vecb| = 2sqrt3 and |veca -vecb|=6 then the angle between veca and vecb , is

If veca and vecb are two vectors such that |veca xx vecb|= veca.vecb , then what is the angle between veca and vecb ?

Let veca and vecb be two vectors such that |2 veca + 3 vecb| = |3 veca + vecb| and the angle between veca and vecb is 60^(@) . If 1/8 veca is a unit vector, then |vecb| is equal to :

If veca and vecb are two vectors, such that veca.vecblt0 and |veca.vecb|=|vecaxxvecb| then the angle between angles between the vectors veca and vecb is

If veca and vecb be two non-collinear unit vectors such that vecaxx(vecaxxvecb)=1/2vecb then find the angle between veca and vecb .

If veca and vecb be two non-collinear unit vectors such that vecaxx(vecaxxvecb)=1/2vecb then find the angle between veca and vecb .

If veca and vecb are two unit vectors such that veca+2vecb and 5veca-4vecb are perpendicular to each other, then the angle between veca and vecb is