• #### The Sine Addition Formulas - Problem 2

How to derive the sine of a difference formula and use it to find the sine of an angle.
• #### 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 Sine Addition Formulas - Problem 2

How to derive the sine of a difference formula and use it to find the sine of an angle.
• #### 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 Sine Addition Formulas - Problem 1

How to use the sine of a sum formula to simplify an expression or to find the sine of an angle.
• #### Trigonometric Ratios: Sine - Concept

##### Math›Trigonometry›Basic Trigonometry
How to define the sine ratio and identify the sine of an angle in a right triangle.
• #### The Inverse Sine Function - Problem 2

How to use apply the inverse identities for sine.
• #### The Inverse Sine Function - Problem 2

How to use apply the inverse identities for sine.
• #### The Sine Addition Formulas - Problem 1

How to use the sine of a sum formula to simplify an expression or to find the sine of an angle.
• #### Trigonometric Ratios: Sine - Concept

##### Math›Precalculus›Basic Trigonometry
How to define the sine ratio and identify the sine of an angle in a right triangle.
• #### Trigonometric Ratios: Sine - Concept

##### Math›Geometry›Basic Trigonometry
How to define the sine ratio and identify the sine of an angle in a right triangle.
• #### The Law of Sines - Concept

##### Math›Trigonometry›Basic Trigonometry
How to define the law of sines.
• #### The Law of Sines - Concept

##### Math›Geometry›Basic Trigonometry
How to define the law of sines.
• #### The Law of Sines - Concept

##### Math›Precalculus›Basic Trigonometry
How to define the law of sines.
• #### The Law of Sines - Problem 2

##### Math›Geometry›Basic Trigonometry
How to find an angle in a triangle using the law of sines.
• #### The Inverse Sine Function - Problem 1

How to define the inverse sine function.
• #### The Law of Sines - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to find an angle in a triangle using the law of sines.