Question

find the angle between the two vectors 2i-2j+k and i-2j+k​

Answer 1

Answer:

Here is the solution :

Given factors are a = i+2j-k and b = 2i+j+k

we have to find angle between given vectors

A.b = lal. lblcos0

a.b= 2+2-1=3

lal=root 6

lbl=root 6

Thereforeby using formula

cos 0=3/6

cos 0=1/2

0 = 30

Therefore, answer The angle between two vectors a = i+2j-k and b=2i+j+k is 30.