Answer:

Step-by-step explanation:
Apply the exponent rule
to a


Apply the exponent rule to b

Apply the exponent rule 

First you have to find the angle B (check attachment)

Then you can find the last angle inside the triangle, which I'll call C

Now you can find angle A

Answer:
≈ 10.63
Step-by-step explanation:
Calculate the distance d using the distance formula
d = 
with (x₁, y₁ ) = P(- 1, - 1) and (x₂, y₂ ) = L(6, - 9)
d = 
= 
= 
=
=
≈ 10.63 ( to the nearest hundredth )