if `veca=2vecm+vecn` and `vecb=vecm-2vecn` angle between the `vecm & vecn`is `60^@ , a,b` are side of the parallogram then length of the diagonals :

if vec a=2vec m+vec n and vec b=vec m-2vec n angle between the vec m&vec n is 60^(@),a,b are side of the parallogram then length of the diagonals:

If 2veca*vecb = |veca| * |vecb| then the angle between veca & vecb is

If 2(veca.vecb)= |veca||vecb| then angle between veca and vecb equals to ,

If |\veca|=sqrt3,|\vecb|=2 and angle between veca and vecb is 60^o . Find veca.vecb .

If |vecA+vecB|=|vecA|=|vecB| then angle between A and B will be

If |vecA+vecB|=|vecA|=|vecB| then angle between A and B will be

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 :

The vector veca=3hati-2hatj+2hatk and vecb=-hati-2hatk are the adjacent sides of a parallelogram. The acute angle between its diagonals is ……….