• #### Arc Length - Concept

##### Math›Geometry›Circles
How to define arc length and how it is different from arc measure; how to calculate the length of an arc.
• #### Arc Length - Problem 1

##### Math›Geometry›Circles
How to find the length of an arc given a radius and arc length.
• #### Arc Length - Problem 2

##### Math›Geometry›Circles
How to find the radius of a circle given arc length and arc measure.
• #### Arc Length - Problem 3

##### Math›Geometry›Circles
How to find the arc length formed by an inscribed angle given the diameter.
• #### Radian Measure of Angles - Problem 4

##### Math›Precalculus›Trigonometric Functions
How to find the arc length and area of a sector when the central angle is given in radians or degrees.
• #### Radian Measure of Angles - Problem 4

##### Math›Trigonometry›Trigonometric Functions
How to find the arc length and area of a sector when the central angle is given in radians or degrees.
• #### Area of a Sector - Problem 3

##### Math›Geometry›Area
How to find the area of a sector given the arc measure and the length of the intercepted chord.
• #### Parametrizing a Line Segment - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How to find a parametrization of segment AB that uses s, the distance from point A, as a parameter.
• #### Radian Measure of Angles - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to measure a central angle of a circle when the radius and the length of the intercepted arc are given.
• #### Radian Measure of Angles - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to measure a central angle of a circle when the radius and the length of the intercepted arc are given.
• #### Secants - Problem 3

##### Math›Geometry›Circles
How to find the length of intersecting secant segments.
• #### Secants - Concept

##### Math›Geometry›Circles
How to define a secant; how to find the length of various secants in circles.
• #### Secants - Problem 4

##### Math›Geometry›Circles
How to fin the length of secant segments drawn from points outside a circle.
• #### Similar Triangles in Circles and Right Triangles - Problem 1

##### Math›Geometry›Similarity
How to find missing side lengths of triangles in a circle.
• #### Similar Triangles in Circles and Right Triangles - Problem 2

##### Math›Geometry›Similarity
How to find missing side lengths in a right triangle with an altitude drawn from the right angle.