The lengths of the diagonals of a parallelogram constructed on the vectors `vec p=2vec a+vec b and vec q=vec a-2 vec b` where `vec a & vec b` are unit vectors forming an angle of `60^@` are:

Q.2 The lengths of the diagonals of a parallelogram constructed on the vectors vec p=2vec a+vec b&vec q=vec a-2vec b .where vec a&vec b are unit vectors forming an angle of 60^(@) are

Twice of the area of the parallelogram constructed on the vectors vec a=vec p+2vec q and are vec b=2vec p+vec q where vec p and vec q are unit vectors containing an angle of 30^(@) is

Determine the lengths of the diagonals of a parallelogram whose adjacent sides are vec a=2 vec m+ vec n and vec b=vec m-2 vec n where vec m and vec n are unit vectors inclined at an angle of angle 60 .

Find the angle between the vectors vec a = 2 vec p + 4 vec q and vec b = vec p- vec q where vec p and vec q are unit vectors forming an angle of 120^@ .

The area of the parallelogram constructed on the vectors vec a=vec p+2vec q and vec b=2vec p+vec q as sides vec p,vec q are unit vectors.Find their area

Angle between vectors vec a and vec b where vec a,vec b and vec c are unit vectors satisfying vec a+vec b+sqrt(3)vec c=0