Answer:
Step-by-step explanation:
We know that the sum of interior angles of a triangle is 180° so we can say:
40 + 2x + 3x = 180°
40 + 5x = 180°
5x = 140°
x = 28°
Now substitute in 28 for the value of x in Angle A:
=> 2x would become 2(28)
=> 56° = ∠A
Hope this helps!
