Question

in angle ABC angle A + angle B =130 and angle A +angle C =120 then find angle A, angle B, angle C​

Answer 1

Answer:

Step-by-step explanation:

     angle A + angle B =130          equation 1

     angle A +angle C =120           equation 2

angle A + angle B +angle C = 180

130 +  angle C = 180                   using equation 1

           angle C =180 -130

           angle C = 50

      angle A +  50  =120    

      angle A = 120 - 50 = 70

      70 + angle B =130  

          angle B =   130 -70 = 60