Question

6. Find scalar triple product b/w i + 2j } } + j + 2k & i + 2k​

Answer 1

Answer:

Answer

Correct option is

A

12

(i−2j+3k)×(2i+j−k).(j+k)

=(i(2−3)−j(−1)6)+(1−(−4)).(j+k)

=(−i+7j+5k).(j+k)=7+5=12