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.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.1: Angles
Problem 30E
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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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