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# Unit 2: Module 2: Trigonometric functions

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"Module 2 builds on students’ previous work with units and with functions from Algebra I, and with trigonometric ratios and circles from high school Geometry. The heart of the module is the study of precise definitions of sine and cosine (as well as tangent and the co-functions) using transformational geometry from high school Geometry. This precision leads to a discussion of a mathematically natural unit of rotational measure, a radian, and students begin to build fluency with the values of the trigonometric functions in terms of radians. Students graph sinusoidal and other trigonometric functions, and use the graphs to help in modeling and discovering properties of trigonometric functions. The study of the properties culminates in the proof of the Pythagorean identity and other trigonometric identities." Eureka Math/EngageNY (c) 2015 GreatMinds.org

## Topic A: Lessons 8-10: Trigonometric graphs and radians

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#### Quiz 1

Level up on the above skills and collect up to 240 Mastery points

## Topic B: Lesson 11: Features of sinusoidal graphs

### Practice

#### Quiz 2

Level up on the above skills and collect up to 560 Mastery points

## Topic B: Lessons 15-17: Trigonometric identities

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#### Unit test

Level up on all the skills in this unit and collect up to 1,500 Mastery points!