• #### Using the Inverse Trigonometric Functions - Concept

How to evaluate expressions like tan(sin (4/5))^(-1).
• #### Solving Trigonometric Equations - Problem 3

How to solve a simple trig equation involving secant.
• #### Solving Trigonometric Equations - Problem 3

How to solve a simple trig equation involving secant.
• #### Using the Inverse Trigonometric Functions - Concept

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

How to prove an identity that involves sin^-1(x) and cos^-1(x).
• #### Using the Inverse Trigonometric Functions - Problem 1

How to prove an identity that involves sin^-1(x) and cos^-1(x).
• #### The Euler Formula - Problem 3

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to derive two trigonometric identities using Euler's Formula.
• #### Converting from Polar Coordinates to Rectangular - Problem 3

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to convert a polar equation, 2/(cos(tehta)-(pi/2)), into rectangular form, and describe the shape of its graph.
• #### Using Trigonometric Identities - Concept

##### Math›Precalculus›Trigonometric Functions
How to simplify a trigonometric expression by converting to sines and cosines and using algebra.
• #### Using Trigonometric Identities - Concept

##### Math›Trigonometry›Trigonometric Functions
How to simplify a trigonometric expression by converting to sines and cosines and using algebra.
• #### Trigonometric Identities - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to use the Pythagorean identity to find cosine and tangent when sine is known.
• #### The Sine Addition Formulas - Concept

How to derive the sine of a sum formula.
• #### The Sine Addition Formulas - Concept

How to derive the sine of a sum formula.
• #### Trigonometric Identities - Problem 1

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

##### Math›Geometry›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### Transforming the Tangent Graph - Concept

##### Math›Precalculus›Trigonometric Functions
How to graph y = tan(q) for one or more periods.
• #### Inverse Trigonometric Functions - Concept

##### Math›Precalculus›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### Transforming the Tangent Graph - Concept

##### Math›Trigonometry›Trigonometric Functions
How to graph y = tan(q) for one or more periods.
• #### Inverse Trigonometric Functions - Concept

##### Math›Trigonometry›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### Transforming Secant and Cosecant - Concept

##### Math›Trigonometry›Trigonometric Functions
How graph the secant function using five key points.