# Answers: September 24

October 1, 2007

**Problem:**Surveying Mathematics: Trigonometry

## Problem: Surveying Mathematics: Trigonometry

In an equilateral triangle, what is the since of half of any one of the interior angles?(A) 0.866

(B) 1.000

(C) 0.707

(D) 0.500

This is problem 12(1-8) from the new second edition of

*1001 Solved Surveying Problems*by Jan Van Sickle. Reprinted with permission from

*1001 Solved Surveying Problems*by Jan Van Sickle (1997, 728 pp., Professional Publications Inc.). For details on this and other FLS exam-prep books, call 800/426-1178 or visit www.ppi2pass.com.