Question

3) Find the angle between the vectors:
A = i-2j - 5k and B = 2i + j - 4k
​

Answer 1

solution,

given,A=I-2j-5k

B=2i+j-4k

( B-A)=(2I+j-4k)-(I-2j-5k)

=i-3j-k

therefore,the angle between the vectore is (I-3j-k)