Surveying
The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The declination of the star, is

70°
50°
60°
80°

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Surveying
Pick up the incorrect statement from the following. In a spherical triangle

Every angle is less than two right angles
Sum of the three angles less than six right angles and greater than two right angles
Sum of the three angles is equal to two right angles
Sum of any two sides is greater than the third

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