Asap! 20 points! abc = 83° and def is supplementary to abc. what is def? a) 97° b) 7° c) 75° d) 100°

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.