• #### The Definitions of Sine and Cosine - Concept

##### Math›Trigonometry›Trigonometric Functions
How we define sine and cosine for all angle measures using the unit circle.
• #### The Definitions of Sine and Cosine - Concept

##### Math›Precalculus›Trigonometric Functions
How we define sine and cosine for all angle measures using the unit circle.
• #### The Definitions of Sine and Cosine - Problem 4

##### Math›Precalculus›Trigonometric Functions
How to determine the magnitude of sine or cosine using a unit circle diagram.
• #### The Definitions of Sine and Cosine - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to determine whether sine and cosine are positive or negative when we know the quadrant.
• #### The Definitions of Sine and Cosine - Problem 3

##### Math›Precalculus›Trigonometric Functions
How to determine whether sine and cosine are positive or negative when we know the quadrant.
• #### The Definitions of Sine and Cosine - Problem 4

##### Math›Trigonometry›Trigonometric Functions
How to determine the magnitude of sine or cosine using a unit circle diagram.