Answer:
a. 19 degrees
Step-by-step explanation:
The angles of a triangle add up to 180 degrees.
This triangle is a right triangle, so it has a 90 degree angle.
The three angles are 90, 71, and x
90+71+x = 180
Combine like terms.
161+x=180
Subtract 161 from each side
161-161 +x =180-161
x =19
