Question 46
Data PresentationTaking the period of daylight on a certain day to be from 5.30 a.m to 7.00 p.m, calculate the periods of daylight and of darkness on that day.
- A.187°30', 172°30'
- B.135°, 225°
- C.202°30', 157°30'
- D.195°, 165°
Show the answer and explanation
Answer: C (202°30', 157°30')
Explanation
Daylight lasts 13½ hours out of 24, so its angle is 13.5/24 × 360° = 202.5° = 202°30'. Darkness is 360° − 202°30' = 157°30'.