Answer:
A, 105
Step-by-step explanation:
alternate exterior angles are equal to each other so divide 150 by half and you get 75, then do 180-75 and you end up with 105 because its a linear pair
i would say 105 and if not then its 115
6. b
7.
8. d
9. a
I'm not sure what 7 is but I can assure you that 6, 8, and 9 are correct
The answer is 300
Hint: 1 - Cos² A = Sin² A