so the right angle is equal to 90° and the rest is unknown.
using the triangle sim theorem, which states that all interior angles are equal to 180°.
so it would be x+2x+90°=180°.
then you would need to simply which is 3x+90°=180°
subtract 90° from both sides and get 3x=90°
and then divide both sides by 3 which is 30°
then you would need to find the angle of B which is 2x so you would need to substitute 30° for x which is 60°
the answer is 60°
