• #### Graph of the Tangent Function - Concept

##### Math›Precalculus›Trigonometric Functions
How to graph y = tan(theta) for 0 <= theta < pi/2.
• #### The Tangent Function - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to find values of tan(q) when q=0, ?/6, ?/4, and ?/3.
• #### The Tangent Function - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to find when sine, cosine, and tangent are positive.
• #### The Tangent Function - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to find when sine, cosine, and tangent are positive.
• #### The Tangent Function - Concept

##### Math›Precalculus›Trigonometric Functions
How to define the tangent function for all angles.
• #### The Tangent Function - Concept

##### Math›Trigonometry›Trigonometric Functions
How to define the tangent function for all angles.
• #### The Cosine Addition Formulas - Concept

How to derive the cosine of a difference formula.
• #### The Half-Angle Identities - Problem 2

How to use a half-angle formula to evaluate cos(105).
• #### The Reciprocal Trigonometric Functions - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to compute all six trigonometric functions at q = -7?/6.
• #### The Reciprocal Trigonometric Functions - Concept

##### Math›Trigonometry›Trigonometric Functions
How to define the reciprocal trigonometric functions, the reciprocal identities, and the Pythagorean identities.
• #### The Half-Angle Identities - Problem 1

How to use a half-angle formula to evaluate sin(/8).
• #### The Reciprocal Trigonometric Functions - Concept

##### Math›Precalculus›Trigonometric Functions
How to define the reciprocal trigonometric functions, the reciprocal identities, and the Pythagorean identities.
• #### The Reciprocal Trigonometric Functions - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to compute all six trigonometric functions at q = -7?/6.
• #### The Half-Angle Identities - Problem 2

How to use a half-angle formula to evaluate cos(105).
• #### The Half-Angle Identities - Problem 1

How to use a half-angle formula to evaluate sin(/8).
• #### The Cosine Addition Formulas - Concept

How to derive the cosine of a difference formula.
• #### The Reciprocal Trigonometric Functions - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to compute all six trigonometric functions at q = 7*pi/4.
• #### Graphs of the Sine and Cosine Functions - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to graph one period of y = cos q.
• #### 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.
• #### The Definitions of Sine and Cosine - Problem 4

##### Math›Trigonometry›Trigonometric Functions
How to determine the magnitude of sine or cosine using a unit circle diagram.