Q2 of 138 Page 24

If are two vectors such that Write the projection of on

Given,

|a|=3, |b|=4

In a quadrilateral ABCD, prove that AB² + BC² + CD² + DA² = AC² + BD² + 4PQ² where P and Q are middle points of diagonals AC and BD.

What is the angle between vectors and with magnitudes 2 and √3 respectively? Given

Find the cosine of the angle between the vectors and

If the vectors and are orthogonal, find m.