Answer:
°
°
°
Explanation:
Let the measure of angle C be
°.
Given:
In triangle ΔABC,
is thirteen less than
and
is eleven less than four times
. This gives,


Also,

Now, for a triangle, the sum of all its interior angles is equal to 180°.
Therefore,

Plug in all the values and solve for x. This gives,

Therefore, measure of angle C is 34°.
Measure of angle A is,
°.
Measure of angle B is,
°.