• #### Transforming the Tangent Graph - Problem 3

##### Math›Precalculus›Trigonometric Functions
How to graph y = -0.2 tan(2x - pi/4).
• #### Trigonometric Identities - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to use the unit circle to show that cosine is an even function, and sine and tangent are odd functions.
• #### The Euler Formula - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use the Euler Formula to convert a complex number from the exponential form to rectangular form.
• #### Graphing the Reciprocal Trigonometric Functions - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to graph y = csc q.
• #### Trigonometric Equations that Require Factoring - Concept

How to solve a sine equation by factoring: 4 [sin(theta)]^2 = 2.
• #### Intercepts and Asymptotes of Tangent Functions - Concept

##### Math›Precalculus›Trigonometric Functions
How to find the x-intercepts and vertical asymptotes of the graph of y = tan(q).
• #### Graphing the Reciprocal Trigonometric Functions - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to graph y = csc q.
• #### Trigonometric Equations that Require Factoring - Concept

How to solve a sine equation by factoring: 4 [sin(theta)]^2 = 2.
• #### The Resultant of Two Forces - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find the resultant of two forces at an acute angle (45 degrees).
• #### Intercepts and Asymptotes of Tangent Functions - Concept

##### Math›Trigonometry›Trigonometric Functions
How to find the x-intercepts and vertical asymptotes of the graph of y = tan(q).
• #### Parametrizing a Circle - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How to write the parametric equations of a circle or semicircle centered at (0,0) with radius r, oriented clockwise.
• #### Unit Vectors - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How to find a unit vector in any direction given the direction's angle.
• #### The Euler Formula - Problem 1

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use the Euler Formula to convert a complex number from rectangular form to the exponential form.
• #### Trigonometric Form of Complex Numbers - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to express a complex number in trigonometric form.
• #### Converting from Rectangular Coordinates to Polar - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to convert the rectangular coordinates of a point into polar coordinates.
• #### Trigonometric Equations that Require Factoring - Problem 3

How to solve a sine and cosine equation by factoring: ?2 sin2 x ? 5 cos x + 4 = 0.
• #### Trigonometric Equations that Require Factoring - Problem 3

How to solve a sine and cosine equation by factoring: ?2 sin2 x ? 5 cos x + 4 = 0.
• #### The Euler Formula - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to derive our method for multiplying complex numbers and DeMoivre's Theorem using Euler's Formula.
• #### Introduction to Polar Coordinates - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to describe a point's location with polar coordinates, and how to convert from polar coordinates to rectangular coordinates.
• #### Converting from Polar Coordinates to Rectangular - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to convert a polar equation into rectangular form, and describe the shape of its graph.