The Earth makes a complete rotation about its axis in 24 hours. Through what angle will it turn in 3 hours 30 minutes?
Answer & explanation
Correct answer: option 2
Earth makes complete rotation in 24hrs = 360°
24x60 = 1440min
for 3hr30min = 3x60+30 = 210min
so, for 01min = 360° divided by 1440
for 210min = 360° divided by 1440 and multply by 210
= 52.5°