## Unit 1: Trigonometry

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### Overview

*This unit is solving oblique triangles and finding the area of triangle given side-angle-side. My idea for the unit is to highlight West Virginia’s natural beauty and the state parks to solve problems using the oblique triangles. We will find the area of oblique triangles to sow wildflower seeds. We will find distances across muck, ravines, and mountains using the Law of Sine and the Law of Cosines. We will use the Law of Sine and Cosines to find inaccessible distances across manufacturing plants using blueprints and also lengths of property lines.*

**Developed By:**Ellen Larter

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## Pre-Unit Assessment

## Lesson 1

Derive and Apply Triangle Area Formula using Sine

## Lesson 2

Law of Sines

## Lesson 3

Law of Cosines