Question #7e94a

1 Answer
Nov 16, 2017

The answer is 19.3 degrees? (question not clear)

Explanation:

Since all other angles are in terms of angle A, it can be a variable, let it be a.

Angle A is a, of course
Angle B is 4a; it is 4 times angle A
Angle C is 5a13; 13 less 5 times angle A

Triangle Sum \Theorem on degrees: A+B+C=180

Here it is
a+4a+5a13=180

Algebra
10a=193
a=19.3

So, a representing Angle A is 16.7 degrees.
To find the others, just plug them in to their corresponding expression in the original problem.

B=4a ...so ... B=77.2
C=5a13 ...so... C=83.5