• #### The Definitions of Sine and Cosine - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to evaluate sine and cosine when the angle is 0, pi/2, pi, 3*pi/2.
• #### The Definitions of Sine and Cosine - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to evaluate sine and cosine when the angle is 0, pi/2, pi, 3*pi/2.
• #### Trigonometric Identities - Problem 3

##### Math›Precalculus›Trigonometric Functions
How to use the unit circle to show that sine and cosine have period 2*pi, and tangent has period pi.
• #### Trigonometric Identities - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to use the unit circle to show that sine and cosine have period 2*pi, and tangent has period pi.
• #### Introduction to Polar Coordinates - Problem 3

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to convert the coordinates of a point from polar to rectangular at an angle pi/4 and 3*pi/4.
• #### The Distance Formula in Polar Coordinates - Problem 1

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to find the distance between two points, (3, 7*pi/6) and (5, pi/2), given their polar coordinates.
• #### Converting Complex Numbers From Trigonometric Form to Rectangular - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to convert a complex number, z = 5*root(2)*(cos(7*pi/4) + i*sin(7*pi/4)), from trigonometric form to rectangular form.
• #### Circumference - Concept

##### Math›Geometry›Circles
How to calculate the circumference of a circle.
• #### Circumference - Problem 2

##### Math›Geometry›Circles
How to find the radius of a circle given circumference.
• #### Concept

##### Science›Chemistry›Chemical Bonds
How to predict the hybridization of atomic orbitals.
• #### Circumference - Problem 3

##### Math›Geometry›Circles
How to find the perimeter of a figure that appears to be a track.
• #### Circumference - Problem 1

##### Math›Geometry›Circles
How to calculate the circumference of a circle given diameter or radius.
• #### Circumference - Problem 4

##### Math›Geometry›Circles
How to find the circumference of a figure formed by two different circles and a straight line.
• #### Writing, Reading Decimals - Concept

##### Math›Pre-Algebra›Decimals and Percents
Vocabulary of place value and how to read decimals
Tags:
• #### 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 1

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

##### Math›Precalculus›Trigonometric Functions
How to graph y = tan(theta) for 0 <= theta < pi/2.
• #### Graph of the Tangent Function - Concept

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

##### Math›Precalculus›Trigonometric Functions
How to evaluate the tangent of 4*pi/3.