Question

If A = 5i + 3j and B = 8i + 3j, what is the magnitude of C = A - B

Answer 1

C=A-B
C=5i+3j-8i-3j
C=-3i
Magnitude of c=root over - 3^2
C=3

Answer 2

#hey there!!

=> Given that :
__________
◆A = 5i + 3j

◆B = 8i + 3j
__________

◆C = A - B = (5i + 3j) - (8i + 3j)

=(5 - 8)i + (3 - 3)j

= ( -3)i + 0 j

= -3 i

so magnitude of C is | C | = 3 ans.

______________________________

Hope it will help you..