Learn the toughest concepts covered in Precalculus with step-by-step video tutorials and practice problems by world-class tutors

Angles and Radian Measure

Recognize and Use the Vocabulary of Angles

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Angles and Radian Measure

Use Degree Measure

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Angles and Radian Measure

Use Radian Measure

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Angles and Radian Measure

Convert Between Degrees and Radians

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Angles and Radian Measure

Draw Angles in Standard Position

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Angles and Radian Measure

Find Coterminal Angles

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Angles and Radian Measure

Find the Length of a Circular Arc

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Angles and Radian Measure

Use Linear and Angular Speed to Describe Motion on a Circular Path

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Trigonometric Functions: The Unit Circle

Use a Unit Circle to Define Trigonometric Functions of Real Numbers

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Trigonometric Functions: The Unit Circle

Recognize the Domain and Range of Sine and Cosine Functions

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Trigonometric Functions: The Unit Circle

Find the Exact Values of the Trigonometric Functions at π / 4

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Trigonometric Functions: The Unit Circle

Use Even and Odd Trigonometric Functions

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Trigonometric Functions: The Unit Circle

Recognize and Use Fundamental Identities

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Trigonometric Functions: The Unit Circle

Use Periodic Properties

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Trigonometric Functions: The Unit Circle

Evaluate Trigonometric Functions With a Calculator

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Right Triangle Trigonometry

Use Right Triangles to Evaluate Trigonometric Functions

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Right Triangle Trigonometry

Find Function Values for 30°(π / 6), 45°(π / 4), and 60°(π / 3)

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Right Triangle Trigonometry

Use Equal Cofunctions of Complements

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Right Triangle Trigonometry

Use Right Triangle Trigonometry to Solve Applied Problems

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Trigonometric Functions of Any Angle

Use the Definitions of Trigonometric Functions of Any Angle

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Trigonometric Functions of Any Angle

Use the Signs of the Trigonometric Functions

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Trigonometric Functions of Any Angle

Find Reference Angles

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Trigonometric Functions of Any Angle

Use Reference Angles to Evaluate Trigonometric Functions

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Graphs of Sine and Cosine Functions

Understand the Graph of *y* = sin *x*

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Graphs of Sine and Cosine Functions

Graph Variations of *y* = sin *x*

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Graphs of Sine and Cosine Functions

Understand the Graph of *y* = cos *x*

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Graphs of Sine and Cosine Functions

Graph Variations of *y* = cos *x*

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Graphs of Sine and Cosine Functions

Use Vertical Shifts of Sine and Cosine Curves

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Graphs of Sine and Cosine Functions

Model Periodic Behavior

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Graphs of Other Trigonometric Functions

Understand the Graph of *y* = tan *x*

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Graphs of Other Trigonometric Functions

Graph Variations of *y* = tan *x*

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Graphs of Other Trigonometric Functions

Understand the Graph of *y* = cot *x*

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Graphs of Other Trigonometric Functions

Graph Variations of *y* = cot *x*

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Graphs of Other Trigonometric Functions

Understand the Graphs of *y* = csc *x* and *y* = sec *x*

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Graphs of Other Trigonometric Functions

Graph Variations of *y* = csc *x* and *y* = sec *x*

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Inverse Trigonometric Functions

Understand and Use the Inverse Sine Function

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Inverse Trigonometric Functions

Understand and Use the Inverse Cosine Function

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Inverse Trigonometric Functions

Understand and Use the Inverse Tangent Function

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Inverse Trigonometric Functions

Use a Calculator to Evaluate Inverse Trigonometric Functions

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Inverse Trigonometric Functions

Find Exact Values of Composite Functions with Inverse Trigonometric Functions

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Applications of Trigonometric Functions

Solve a Right Triangle

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Applications of Trigonometric Functions

Solve Problems Involving Bearings

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Applications of Trigonometric Functions

Model Simple Harmonic Motion

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Applications of Trigonometric Functions

Inverse cotangent, cosecant, and secant functions

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