Question

· Let S=(1m)^i+(2m)^j+(2m)^k and T=(3m)^i+(4m)^k then angle between these two vectors is

Answer 1

Since S. T = |S|. |T| cos theta
Therfore cos theta=(S. T) / |S|. |T|
=(3+8)/3 *5
=11/15
Therfore theta =cos inverse(11/15)

Answer 2

Answer:

11/15

hope it's help you