Question

A=3i+4j+5k B=i-j-2k C=2i-3j-3k find |A+B+C|

Answer 1

Answer:

6i

Step-by-step explanation:

A=3i+4j+5k B=i-j-2k C=2i-3j-3k

|A+B+C| = |3i+4j+5k +  i-j-2k + 2i-3j-3k|

|A+B+C| = |(3i+i+2i) + (4j-j-3j) + (5k-2k-3k)|

|A+B+C| = | (6i) + (0j) + (0k)

|A+B+C| = |6i| = 6i