Question

Find the angle between A=2i+2j-k and B=7i+24k

Answer 1

Step-by-step explanation:

Let

a

=3i+j+2k and

b

=2i−2j+4k.

Now angle between

a

and

b

be

cos

−1

(

∣

a

∣∣

b

∣

a

.

b

)=cos

−1

(

14

.

24

6−2+8

)=cos

−1

(

28

3

).