## Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.

29 Lesson(s)

### Discovering Trig

Geometry » Unit: Trig Trickery
Geometry » Unit: Trig Trickery
Saratoga Springs, NY
Environment: Suburban

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Resources (13)

### NPR Car Talk Problem - Day 2 of 2

12th Grade Math » Unit: Trigonometric Functions
12th Grade Math » Unit: Trigonometric Functions
Troy, MI
Environment: Suburban

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#### This problem from NPR's Car Talk is engaging, challenging, and mathematically rich!

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Favorites (4)

Resources (9)

12th Grade Math » Unit: Review
Phoenix, AZ
Environment: Urban

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Favorites (5)

Resources (23)

Reflections (1)

### Building a Kicker Ramp

Geometry » Unit: Introduction to Trigonometry
Geometry » Unit: Introduction to Trigonometry
Ault, CO
Environment: Rural

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Favorites (20)

Resources (26)

### 30-60-90 and 45-45-90 Fun

Geometry » Unit: Trig Trickery
Geometry » Unit: Trig Trickery
Saratoga Springs, NY
Environment: Suburban

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Favorites (11)

Resources (18)

### Introduction to Trigonometry Unit Quiz

Geometry » Unit: Introduction to Trigonometry
Geometry » Unit: Introduction to Trigonometry
Ault, CO
Environment: Rural

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Resources (29)

### Introduction to Trigonometry

Geometry » Unit: Right Triangle Trigonometry
Geometry » Unit: Right Triangle Trigonometry
Amsterdam, NY
Environment: Urban

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Resources (22)

Reflections (2)

### Properties of Sine and Cosine

Geometry » Unit: Introduction to Trigonometry
Geometry » Unit: Introduction to Trigonometry
Ault, CO
Environment: Rural

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Favorites (5)

Resources (22)

### Trig Time

Geometry » Unit: Trig Trickery
Geometry » Unit: Trig Trickery
Saratoga Springs, NY
Environment: Suburban

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Favorites (10)

Resources (13)

### Riding a Ferris Wheel - Day 2 of 2

12th Grade Math » Unit: Trigonometric Functions
12th Grade Math » Unit: Trigonometric Functions
Troy, MI
Environment: Suburban

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Favorites (5)

Resources (10)

Reflections (1)

### Trigonometric Functions: Unit Assessment

12th Grade Math » Unit: Trigonometric Functions
12th Grade Math » Unit: Trigonometric Functions
Troy, MI
Environment: Suburban

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Resources (3)

### Intro to Trigonometry / What is Similarity?

12th Grade Math » Unit: Trigonometry: Triangles
12th Grade Math » Unit: Trigonometry: Triangles
Worcester, MA
Environment: Urban

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Favorites (2)

Resources (25)

Reflections (1)

### Finding Angle Measurements Using Trig

Geometry » Unit: Right Triangle Trigonometry
Geometry » Unit: Right Triangle Trigonometry
Amsterdam, NY
Environment: Urban

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Favorites (9)

Resources (17)

Reflections (1)

### Finishing Up the Similar Triangles Project

12th Grade Math » Unit: Trigonometry: Triangles
12th Grade Math » Unit: Trigonometry: Triangles
Worcester, MA
Environment: Urban

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Resources (14)

### More on Finding Lengths of Segments

Geometry » Unit: Right Triangle Trigonometry
Geometry » Unit: Right Triangle Trigonometry
Amsterdam, NY
Environment: Urban

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Standards:

Favorites (8)

Resources (16)
Common Core Math

### High School

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