# Unit Circle

## Determine exact values of trig ratios for common radian measures

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## Trigonometric Ratios on the Unit Circle

This lesson explores how to find the exact trig values of certain angles.
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## The Unit Circle

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## The Unit Circle

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## Trigonometric Ratios on the Unit Circle

This lesson explores how to find the exact trig values of certain angles.
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## SLT 11: Make connections among various types of functions, their transformations and key features

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## Trigonometric Ratios on the Unit Circle

This lesson explores how to find the exact trig values of certain angles.
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• PLIX

## Medieval Castle Defense

Unit Circle Interactive
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• Video

## Unit Circle Definition of Trig Functions

by Apoorva Handigol //basic
In this great video, use the unit circle to define the sine, cosine, and tangent functions.
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• Video

## Evaluating Trigonometric Functions (The Unit Circle) - Overview

by CK-12 //basic
Overview
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• Video

## Evaluating Trigonometric Functions (The Unit Circle) - Example 1

by CK-12 //basic
Find the point on the unit circle that corresponds to the given angle
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• Video

## Evaluating Trigonometric Functions (The Unit Circle) - Example 2

by CK-12 //basic
Evaluate trigonometric functions given an angle measure using the unit circle
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• Video

## Pattern for Memorizing the Unit Circle

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• Video

## Evaluating Trigonometric Functions (The Unit Circle) - Example 3

by CK-12 //basic
Evaluate trigonometric functions using the calculator
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## Evaluating Trigonometric Functions (The Unit Circle) - Example 4

by CK-12 //basic
Use the period of the function to evaluate sine and cosine
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• Study Guide

## The Unit Circle

by Wesley Woo //basic
Study guide for the unit circle.
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• Flashcards

## Trigonometric Ratios on the Unit Circle

by Kyle Bardman //basic
These flashcards will help you better understand Algebra II with Trigonometry Concepts.
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