Question

E→ = -20 i kap + 30 J kap
D→ = 10 i kap + J kap
C→= i kap + J kap + k kap
Find D→.E→ and C→.D→

Please explain THIS BRIEFLY!
→ stands for vector.

Answer 1

Answer:

1)-320k kap

2)-i kap +10j kap-9kap

Explanation:

Hope it helps....