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Here is a great link to help you understand more about the Unit Circle.

"Unit Circle"

Author: Math is Fun

https://www.mathsisfun.com/geometry/unit-circle.html

Copyright © 2016 MathsIsFun.com

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If you are still struggling with trig ratios, play this game to practice

"Evaluating Trigonometric Ratios"

Author:Roy Peterson

https://www.wisc-online.com/learn/formal-science/mathematics/tmh601/evaluating-trigonometric-ratios

Creative Commons Attribution-NonCommercial 4.0 International License.

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how do i calculate sine cosine and tangent

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Need help with your Technical Math homework? In this learning activity you'll evaluate the Sine, Cosine, and Tangent ratios of a right triangle.

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Use this website to learn about the different steps to graphing Sine and Cosine functions.  Look through the tabs on amplitude and periods, too!

"Graphing Sine, Cosine, and Tangent"

Author: MathGuide

http://www.mathguide.com/lessons2/GraphingTrig.html#quiz

Copyright © 2000-2017 GigaGod Productions, Inc. All rights reserved.

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Graphing Sine, Cosine, and Tangent by MATHguide

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Graphing Sine, Cosine, and Tangent Functions: Learn how to graph sine, cosine, and tangent functions, including amplitude, period, phase shift, and vertical shift.

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Play with this manipulative to try to figure out how we find special right triangles using reference angles!

"Reference Angles and Triangles"

Author: Scott Farrar

https://www.geogebra.org/m/ek7KSMea

© 2017 International GeoGebra Institute

Attribution-ShareAlike 3.0

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Observe the red reference angle, and its relationship to the standard angle (blue).

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Use this applet to explore co-terminal angles.  See if you can determine the relationship between an angle and a coterminal angle.

"Defining the Coterminal Angle

Author: Ms. Vollrath and A B Cron

https://www.geogebra.org/m/KGNMgcGa

© 2017 International GeoGebra Institute

Attribution-ShareAlike 3.0

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demonstration of coterminal angles, least positive, greatest negative, reference angle,

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I can use the unit circle to find reference angles

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I can use the unit circle to find reference angles

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Once you've learned to graph angles in standard position, it is useful to find reference angles.  These references angles can be used to solve for sin, cos, and tan using special right triangles!

"Special Angles"

Author : Boundless

https://www.boundless.com/algebra/textbooks/boundless-algebra-textbook/trigonometry-388/trigonometric-functions-and-the-unit-circle-390/special-angles-398-17442/

CC BY-SA 4.0

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Special Angles - Boundless Open Textbook

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The unit circle and a set of rules can be used to recall the values of trigonometric functions of special angles. Read more about special angles in the Boundless open textbook.

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Watch this video on how to graph angles.   Make sure you understand the difference between negative and positive angles!

"Drawing Angles in Standard Position"

Attributed by MrStanislow

https://creativecommons.org/licenses/by-sa/3.0/

CC BY-SA 3.0

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How to draw angles in standard position using degree or radian measure.

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Here is a quick reference to the ratio of a 30-60-90 special right triangle!

"30-60-90 Triangle"

Author: Nova Division

https://commons.wikimedia.org/wiki/File:30-60-90_triangle.jpg

Public Domain

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Here is a quick reference to the ratio of a 45-45-90 special right triangle!

'45-45 Triangle"

Author: Chris-martin

https://commons.wikimedia.org/wiki/File:45-45-triangle.svg

Public Domain

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I can convert between Radians and Degrees

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I can convert between Radians and Degrees

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Click here to read about how to convert between radians and degrees. Try the practice problems to see if you have mastered this standard.

"Converting Between Degrees and Radians"

Authored by: OpenStax College.

Provided by: OpenStax. Located at: http://cnx.org/contents/fd53eae1-fa23-47c7-bb1b-972349835c3c@5.175:1/Preface

License: CC BY: Attribution

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This Padlet will be your review for your Trigonometry Unit

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This Padlet will be your review for your Trigonometry Unit

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Review the statements below and visit the standards you have not mastered yet.

I can convert between Radians and Degrees

I can solve for a missing side length on a special right triangle

I can draw angles in standard form

I can find co-terminal angles

I can use the unit circle to find reference angles

I can graph sine and cosine

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I can solve for a missing side length on a special right triangle

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I can solve for a missing side length on a special right triangle

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Click here to watch videos on how to use special right triangles.

"Special Right Triangles"

Author: Sal Khan

NOTE: All Khan Academy content is available for free at www.khanacademy.org   © 2017 Khan Academy

https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-special-right-triangles/v/45-45-90-triangles

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