• #### Evaluating Sine and Cosine at Other Special Angles - Concept

##### Math›Precalculus›Trigonometric Functions
How to measure the sine and cosine of 150.
• #### Trigonometric Equations that Require Factoring - Concept

How to solve a sine equation by factoring: 4 [sin(theta)]^2 = 2.
• #### The Cosine Addition Formulas - Problem 3

How to evaluate cos(a ? b) and cos(a + b) when you know only sin(a) and cos(b).
• #### Graphing the Reciprocal Trigonometric Functions - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to graph y = sec q.
• #### Evaluating Sine and Cosine at Special Acute Angles - Problem 1

##### Math›Precalculus›Trigonometric Functions
How do we measure sine and cosine of ?/6?
• #### Evaluating Sine and Cosine at Special Acute Angles - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How do we measure sine and cosine of ?/6?
• #### Trigonometric Equations that Require Factoring - Concept

How to solve a sine equation by factoring: 4 [sin(theta)]^2 = 2.
• #### The Cosine Addition Formulas - Problem 3

How to evaluate cos(a ? b) and cos(a + b) when you know only sin(a) and cos(b).
• #### Evaluating Sine and Cosine at Special Acute Angles - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to measure sine and cosine of pi/3
• #### Evaluating Sine and Cosine at Special Acute Angles - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to measure sine and cosine of pi/3
• #### Evaluating Sine and Cosine at Other Special Angles - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to measure the sine and cosine of -135?.
• #### Evaluating Sine and Cosine at Special Acute Angles - Problem 3

##### Math›Precalculus›Trigonometric Functions
How do we graph sine and cosine when q is between 0 and ?/2?
• #### Evaluating Sine and Cosine at Other Special Angles - Problem 2

##### Math›Precalculus›Trigonometric Functions
How to measure the sine and cosine of 11*pi/6.
• #### Evaluating Sine and Cosine at Other Special Angles - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to measure the sine and cosine of -135?.
• #### Evaluating Sine and Cosine at Other Special Angles - Problem 3

##### Math›Precalculus›Trigonometric Functions
How to measure the sine and cosine of -5?/3.
• #### 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.