Question

Find the measure of each angle in Triangle ABC. m∠a=(50−x)°m∠b=(9x−40)°m∠c=90°

Answer 1

40°

50°

90°

Explanation:

sum of angle in a triangle is= 180°

(50-x)° + (9x-40)° + 90° = 180°

50-x+9x-40 + 90 = 180

50- 40 +90 -x+9x =180

100 + 8x = 180

8x = 180 -100

8x = 80

x = 80/8 =10

x = 10°

measure of a= (50-x) = 50- 10 = 40°

measure of b = (9x-40)= 90- 40= 50°

measure of c = 90°