1. A surveyor measures a triangular plot of land. 72.8 yd. 20 80.5 yd. a) Determine the length of side I. b) Determine the measure of ZN using the Cosine Law. c) Could you have used the Sine Law in part b? Explain.

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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1. A surveyor measures a triangular plot of land.
72.8 yd.
20°
80.5 yd.
a) Determine the length of side I.
b) Determine the measure of ZN using the Cosine Law.
c) Could you have used the Sine Law in part b? Explain.
Transcribed Image Text:1. A surveyor measures a triangular plot of land. 72.8 yd. 20° 80.5 yd. a) Determine the length of side I. b) Determine the measure of ZN using the Cosine Law. c) Could you have used the Sine Law in part b? Explain.
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