LSIT Mathematics for Surveying

Question 1

What trigonometric function relates opposite side to hypotenuse?

Accepted Answer

Sine

Answer

Sine = opposite / hypotenuse in a right triangle.

Question 2

What is the law of cosines used for in surveying?

Accepted Answer

Solving triangles when you know two sides and the included angle or three sides

Answer

This law works for any triangle, not just right triangles.

Question 3

How do you convert bearings to azimuths?

Accepted Answer

NE bearings equal the bearing angle; SE bearings = 180 minus bearing; SW = 180 plus bearing; NW = 360 minus bearing

Answer

The conversion depends on the quadrant of the bearing.

Question 4

What is the formula for slope distance to horizontal distance?

Accepted Answer

HD = SD × cos(vertical angle)

Answer

Cosine of the vertical angle converts slope to horizontal.

Question 5

What is coordinate geometry (COGO)?

Accepted Answer

Mathematical computation of coordinates, areas, distances, and directions from survey data

Answer

Mathematical computations from survey data produce coordinates.

(LSIT) Land Surveyor in Training Practice Test