Step-by-step explanation:
We can see the labeled angles as the angles of a right triangle:
The sum of the measures of the interior angles of any triangle is 180º. If we have a right triangle, then the sum of the measures of the angles that are not right is 90º:

We have the measure of the angle at the top: x = 64º.
We can find the measure of the angle at the bottom:

Answers:
• x = ,64º
,
• x-38 =, 26º