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This question belongs to Civil Engineering Surveying
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If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is

Answer & Solution
Correct Answer: Option C
Correct Answer: Option C: 40°

Explanation:

The latitude (\(\phi\)) of a place can be determined using the formula:

\[ \phi = \frac{\text{Altitude at Upper Transit} + \text{Altitude at Lower Transit}}{2} \]

Given:

Upper Transit Altitude = 60° 30'

Lower Transit Altitude = 19° 30'

\[ \phi = \frac{(60° 30') + (19° 30')}{2} \]

Converting minutes:

\[ \phi = \frac{(60.5 + 19.5)}{2} = \frac{80}{2} = 40° \]

Thus, the latitude of the place is 40°.
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3 Comments
RaNa Dheer
RaNa Dheer 2 years ago
Please explain anyone what is date line
Akash Singh
Akash Singh 6 years ago
Sir A and C Option is same. But why true answer is C why not A
Abhishek Bagul
Abhishek Bagul 7 years ago
1) 90 - 60 30' = 29 30' ~ 30
2)
i) 90 - (60 30' + 19 30') = 10
ii) 19 30' + 10 = 29 30' ~ 30