• #### Using Sine to Calculate the Area of a Triangle - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to calculate the area of a triangle using two sides and an included angle.
• #### The Reciprocal Trigonometric Functions - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to compute all six trigonometric functions at q = 7*pi/4.
• #### The Reciprocal Trigonometric Functions - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to compute all six trigonometric functions at q given sec q.
• #### Graphs of the Sine and Cosine Functions - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to graph one period of y = cos q.
• #### Using Sine to Calculate the Area of a Triangle - Concept

##### Math›Geometry›Basic Trigonometry
How to calculate the area of any triangle using two sides and an included angle.
• #### Square Root Operations - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to add terms with square roots.
• #### Using Sine to Calculate the Area of a Triangle - Concept

##### Math›Precalculus›Basic Trigonometry
How to calculate the area of any triangle using two sides and an included angle.
• #### Transforming the Cotangent Graph - Concept

##### Math›Trigonometry›Trigonometric Functions
How graph the cotangent function using five key points.
• #### Graphing the Reciprocal Trigonometric Functions - Concept

##### Math›Trigonometry›Trigonometric Functions
How to use the unit circle to derive identities that are useful in graphing the reciprocal trigonometric functions.
• #### Graphing the Reciprocal Trigonometric Functions - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to graph y = cot q.
• #### Using Sine to Calculate the Area of a Triangle - Problem 1

##### Math›Geometry›Basic Trigonometry
How to calculate the area of a triangle using two sides and an included angle.
• #### Transforming Secant and Cosecant - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to graph a transformation of the secant function.
• #### Transforming the Cotangent Graph - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to graph y = -cot(theta + pi/2), a transformation of cotangent that results in the graph of tangent.
• #### Transforming Secant and Cosecant - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to graph y = sec(theta * pi/2), a transformation that results in the graph of cosecant.
• #### Using the Inverse Trigonometric Functions - Concept

How to evaluate expressions like tan(sin (4/5))^(-1).
• #### Using the Inverse Trigonometric Functions - Problem 2

How to find an algebraic expression that is equivalent to sec2(tan-1 x).