Question

if vector P=2i+2j+2k and vector Q= 5i-2j+4k then vector P+vector Q is​

Answer 1

Answer:

Given, PQ=−3i+4j+4k

and PR=5i−2j+4k

Therefore, the length of the median through P

= 21 ∣PQ+PR∣= 21 ∣2i+2j+8k∣= 21 4+4+64 + 21

72= 18