Problem of the Week: The PZS Triangle

Which element of the PZS triangle is the least used in surveying astronomy?

(A) zenith angle

(B) hour angle

(C) parallactic angle

(D) colatitude

The answer is (C).

This is problem 21 (4-3) from the NEW third edition of “Surveying Solved Problems for the FS and PS Exams” by Jan Van Sickle, PLS (formerly "1001 Solved Surveying Fundamentals Problems"). Reprinted with permission from “Surveying Solved Problems for the FS and PS Exams” by Jan Van Sickle, PLS (2008 Professional Publications Inc.). For details on this and other FLS exam-prep books, call 800/426-1178 or visit www.ppi2pass.com.