Question

Please solve this problem ​

Answer 1

Answer:

∠A =50° and ∠B =40°

Step-by-step explanation:

Solution:-

=> ( x-20 ) + ( x -30 ) = 90

=> 2x -50 = 90

=> 2x = 90 + 50

=> x = 140/2

=> x = 70

Now,

∠A = x -20

= 70 -20

= 50

Again,

∠B = x -30

= 70 -30

= 40