Question

Find+the+angle+between+two+vectors+A=2i+j-k+and+B=i-k.

Answer 1

Answer:

73.22°

Explanation:

A.B=(2i+j-k).(i-k) = 2-1 = 1 = √6√2cos∝

cos∝ = 1/√12

∝ = 73.22°