• #### Plotting Points and Naming Quadrants - Problem 1

##### Math›Algebra›Graphs and Functions
How to plot points in Quadrant I.
• #### Plotting Points and Naming Quadrants - Concept

##### Math›Algebra›Graphs and Functions
How to plot points and name quadrants.
• #### Plotting Points and Naming Quadrants - Problem 2

##### Math›Algebra›Graphs and Functions
How to plot points in Quadrant III.
• #### Plotting Points and Naming Quadrants - Problem 3

##### Math›Algebra›Graphs and Functions
How to plot points when the x value is a fraction
• #### The Definitions of Sine and Cosine - Problem 3

##### Math›Precalculus›Trigonometric Functions
How to determine whether sine and cosine are positive or negative when we know the quadrant.
• #### The Definitions of Sine and Cosine - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to determine whether sine and cosine are positive or negative when we know the quadrant.
• #### Evaluating the Tangent Function - Concept

##### Math›Trigonometry›Trigonometric Functions
How to evaluate the tangent of 3*pi/4.
• #### Evaluating the Tangent Function - Concept

##### Math›Precalculus›Trigonometric Functions
How to evaluate the tangent of 3*pi/4.
• #### Evaluating the Tangent Function - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to evaluate the tangent of -?/6.
• #### Evaluating the Tangent Function - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to evaluate the tangent of -?/6.
• #### Evaluating the Tangent Function - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to evaluate the tangent of 4*pi/3.
• #### Trigonometric Identities - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to use the Pythagorean identity to find cosine and tangent when sine is known.
• #### Evaluating the Tangent Function - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to evaluate the tangent of 4*pi/3.
• #### Trigonometric Identities - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to use the Pythagorean identity to find cosine and tangent when sine is known.
• #### The Half-Angle Identities - Concept

How to use the power reduction formulas to derive the half-angle formulas.
• #### The Half-Angle Identities - Concept

How to use the power reduction formulas to derive the half-angle formulas.
• #### The Definitions of Sine and Cosine - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to find the sine of an angle when its cosine is given.
• #### The Definitions of Sine and Cosine - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to find the sine of an angle when its cosine is given.
• #### The Definitions of Sine and Cosine - Problem 4

##### Math›Precalculus›Trigonometric Functions
How to determine the magnitude of sine or cosine using a unit circle diagram.
• #### Rectangular Coordinate System - Concept

##### Math›Algebra 2›Graphs of Linear Equations
How to talk about the rectangular coordinate system.