Answer:
15
Step-by-step explanation:
Any triangle adds you to 180
Because it is a right triangle it will automatically have 90°
Now you know 90° and 75°. You add it up and get 165°
Then you take the sum of all angles which is 180° and you do 180°-165°.
Your answer is 15°. it is an acute angle because it is below 90°
