20 because 19 16/33 is the exact answer. Since they ask about how much that can be rounded up to 20
Answer:

Step-by-step explanation:
we know that
The equation of the line into point slope-form is equal to

in this problem we have


substitute the values in the formula

Odd.................................
The second one is the only equivalent equation. Simply plug in each variable in each equation. And compare!
Step-by-step explanation:
so the smallest angle is angle A which is 30 degree