Answer:
55.4
Step-by-step explanation:
The sum of the angles of a triangle is 180
If we have a right triangle, one angle is 90
The other two angles must add to 90 degrees
Let the unknown angle be x
34.6 + x = 90
Subtract 34.6 from each side
34.6+x-34.6 = 90-34.6
x =55.4
