If ∠A is complementary to ∠F and m∠A = 79°, what is m∠F?
Answers:
60
101
11
7

So, since a complimentary angle equals 90 degrees, and angle A is 79 degrees, you subtract 90 from 79 and you get 11. To check your work, ask yourself, “do these two measurements equal 90 degrees?” And if they do, then you know you’re right. Hope this helps!