# Activities

• ##### Download

• • ##### Subject Area

• Math: Precalculus: Trigonometric Laws and Identities

• ##### Author 9-12

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• ##### Software

TI-Nspire™ CX
TI-Nspire™ CX CAS

5.0

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Radio Station KTNS

Updated on 05/10/2019

#### Activity Overview

This lesson involves determining the distance one can hear a radio station as a function of the range of the station.

#### Objectives

• Students will solve a problem experimentally by fitting a function to a set of data.
• Students will solve the same problem theoretically by making and verifying conjectures using algebraic and trigonometric methods.

#### Vocabulary

• Law of Sines
• Law of Cosines

#### About the Lesson

This lesson involves determining the distance one can hear a radio station as a function of the range of the station.
As a result, students will:

• Solve the problem empirically by fitting a regression equation to a set of gathered data.
• Solve the problem theoretically by finding an equation involving the Law of Cosines and the Law of Sines.