Answer:
72
Explanation:
The two acute angles add up to 90 degrees. That's because the given triangle is a right triangle.
So x + 4x + 90 = 180 All triangles = 180°. Combine left side terms.
5x + 90 = 180 Subtract 90°
5x + 90 - 90 = 180 - 90 Combine
5x = 90 Divide by 5
5x/5 = 90/5 Combine
x = 18
The larger angle is 4x so
The larger angle = 4*18 = 72