Surveying
The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on

June 21
December 22
March 21
September 21

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The difference between a level line and a horizontal line is that

level line is a curved line while hori-zontal line is a straight line
both are same
level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
horizontal line is normal to plumb line while level line may not be normal to the plumb line

ANSWER DOWNLOAD EXAMIANS APP