I need number 15. The very bottom in bold letters.

Answer:
41 degrees
Step-by-step explanation:
If the pole is perpendicular to the ground, the angle it creates is 90 degrees. Barry has already lifted it 49 degrees, so
90 - 49 = 41
It must be lifted another 41 degrees.
Answer:
41°
Step-by-step explanation:
Since a perpendicular angle is 90° and the guy has the pole lifted 49° already, the pole needs to be lifted 41° more so that 49+41=90. You would solve this by 90° - 49°= 41°.