• #### The Law of Sines - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to find the length of a triangle given two angles and a side, using the law of sines.
• #### Space Diagonals - Problem 2

##### Math›Trigonometry›Pythagorean Theorem
How to find the space diagonal of a rectangular prism using the Pythagorean Theorem.
• #### Graphs of the Sine and Cosine Functions - Concept

##### Math›Trigonometry›Trigonometric Functions
How to define periodic functions.
• #### Radian Measure of Angles - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to measure a central angle of a circle when the radius and the length of the intercepted arc are given.
• #### Space Diagonals - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to find the length of the longest object that will fit inside a box.
• #### The Law of Cosines - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to use the law of cosines to find a missing angle given three sides in a triangle.
• #### The Inverse Sine Function - Concept

How to restrict the domain of sine so it will have an inverse function.
• #### The Inverse Cosine Function - Problem 1

How to define the inverse cosine function.
• #### The Inverse Sine Function - Problem 2

How to use apply the inverse identities for sine.
• #### The Inverse Sine Function - Problem 3

How to graph a simple transformation of y = sin^-1 x
• #### The Inverse Cosine Function - Problem 3

How to graph a simple transformation of y = cos^-1(x) + pi/2
• #### The Inverse Cosine Function - Concept

How to restrict the domain of cosine so it will have an inverse function.
• #### The Inverse Cosine Function - Problem 2

How to use apply the inverse identities for cosine.
• #### The Inverse Tangent Function - Problem 1

How to define the inverse tangent function.
• #### The Inverse Tangent Function - Concept

How to restrict the domain of tangent so it will have an inverse function.
• #### The Cosine Addition Formulas - Concept

How to derive the cosine of a difference formula.