Answer:
Is there supposed to be a photo? Or attachment?
Step-by-step explanation:
The answer is
the vector PQ has (4-1, 8-2) as components, so it is vecPQ= (3, 6)
using the definition
the distance PQ= sqrt ( 3²+6²)= sqrt(9+36)=sqrt(45)
1. 45 degree angle. 2. 20* same as the bottom do to the top.
