• #### Inverse Trigonometric Functions - Problem 2

##### Math›Geometry›Basic Trigonometry
How to use inverse trig functions to find an angle in a trapezoid.
• #### Trigonometric Ratios: Sine - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to find the sine of two angles in a right triangle given two side lengths.
• #### Inverse Trigonometric Functions - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to use inverse trig functions to find an angle in a trapezoid.
• #### Inverse Trigonometric Functions - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### Inverse Trigonometric Functions - Problem 1

##### Math›Geometry›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### The Law of Cosines - Concept

##### Math›Geometry›Basic Trigonometry
How to define and use the law of cosines.
• #### The Law of Cosines - Concept

##### Math›Precalculus›Basic Trigonometry
How to define and use the law of cosines.
• #### The Law of Sines - Concept

##### Math›Precalculus›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.
• #### Equation of a Circle - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to derive the equation for a circle using the distance formula.
• #### Evaluating the Tangent Function - Concept

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

##### Math›Trigonometry›Pythagorean Theorem
How to define and calculate a space diagonal.
• #### Using Trigonometric Identities - Problem 3

##### Math›Trigonometry›Trigonometric Functions
How to prove an identity using a Pythagorean identity and algebra.
• #### Equation of a Circle - Problem 3

##### Math›Trigonometry›Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle.
• #### Evaluating the Tangent Function - Problem 2

##### Math›Trigonometry›Trigonometric Functions
How to evaluate the tangent of -?/6.
• #### The Law of Cosines - Problem 1

##### Math›Geometry›Basic Trigonometry
How to use the law of cosines to find a missing side in a triangle.
• #### The Law of Cosines - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to use the law of cosines to find a missing side in a triangle.
• #### The Law of Sines - Problem 2

##### Math›Geometry›Basic Trigonometry
How to find an angle in a triangle using the law of sines.
• #### Distance Formula - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to derive the equation for the distance between two points using the Pythagorean Theorem.
• #### Equation of a Circle - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle.