## Prove the Pythagorean identity sin2(θ) + cos2(θ) = 1 and use it to find sin(θ), cos(θ), or tan(θ) given sin(θ), cos(θ), or tan(θ) and the quadrant of the angle.

39 Lesson(s)

### Playing with the Numbers

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Craigmont, ID
Environment: Rural

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### Unit Review Game: Lingo

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

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### What do Triangles have to do with Circles?

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Fort Collins, CO
Environment: Suburban

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### Unit Assessment: Trigonometric Relationships

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

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#### Assess your students' understanding of this unit.

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12th Grade Math » Unit: Review
Phoenix, AZ
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### Sum and Difference Identities

12th Grade Math » Unit: Trigonometric Equations
12th Grade Math » Unit: Trigonometric Equations
Phoenix, AZ
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### Proving Identities

12th Grade Math » Unit: Trigonometric Identities
12th Grade Math » Unit: Trigonometric Identities
Independence, MO
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### Formative assessment over Identities

12th Grade Math » Unit: Trigonometric Identities
12th Grade Math » Unit: Trigonometric Identities
Independence, MO
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### Pythagorean Identity

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Caldwell, ID
Environment: Rural

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### Weather Ups and Downs

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Craigmont, ID
Environment: Rural

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### When Will We Ever Use This

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Craigmont, ID
Environment: Rural

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### Trigonometric Functions Review Day 1

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Caldwell, ID
Environment: Rural

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### Tangent Modeling

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Craigmont, ID
Environment: Rural

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### Here's Proof

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Craigmont, ID
Environment: Rural

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### Trig Review

Algebra II » Unit: Trigonometric Functions
Algebra II » Unit: Trigonometric Functions
Craigmont, ID
Environment: Rural

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Common Core Math