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# Unit 2: Trigonometric functions

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## About this unit

Discover how to measure angles, distances, and heights using trigonometric ratios and the unit circle. Learn how to use sine, cosine, and tangent to solve real-world problems involving triangles and circular motion.

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### Practice

- Radians & degreesGet 3 of 4 questions to level up!
- Unit circle (with radians)Get 3 of 4 questions to level up!

### Practice

- Trig values of π/6, π/4, and π/3Get 3 of 4 questions to level up!

### Learn

### Practice

- Trig identities from reflections and rotationsGet 3 of 4 questions to level up!
- Trig values of special anglesGet 3 of 4 questions to level up!

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

### Learn

### Practice

- Midline of sinusoidal functions from graphGet 3 of 4 questions to level up!
- Amplitude of sinusoidal functions from graphGet 3 of 4 questions to level up!
- Period of sinusoidal functions from graphGet 3 of 4 questions to level up!

### Learn

### Practice

- Amplitude of sinusoidal functions from equationGet 3 of 4 questions to level up!
- Midline of sinusoidal functions from equationGet 3 of 4 questions to level up!
- Period of sinusoidal functions from equationGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 480 Mastery points

### Learn

### Practice

- Graph sinusoidal functionsGet 3 of 4 questions to level up!
- Construct sinusoidal functionsGet 3 of 4 questions to level up!
- Graph sinusoidal functions: phase shiftGet 3 of 4 questions to level up!

### Learn

### Practice

- Interpreting trigonometric graphs in contextGet 3 of 4 questions to level up!
- Modeling with sinusoidal functionsGet 3 of 4 questions to level up!
- Modeling with sinusoidal functions: phase shiftGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 480 Mastery points

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Level up on all the skills in this unit and collect up to 1,900 Mastery points!