252 Videos for "circle"

Finding Intercepts, Domain, Range and Vertex of a Parabola  Problem 2
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to find the vertex, intercepts, domain and range of a quadratic graph. 
Area of an Annulus  Problem 1
Math › Geometry › Area
How to calculate the area between two circles, given the radius of the smaller circle and the distance between the circles. 
Area of an Annulus  Problem 2
Math › Geometry › Area
How to calculate the area between two circles, given the radius of the smaller circle and the distance between the circles. 
Area of an Annulus  Problem 3
Math › Geometry › Area
How to find the distance between two circles given the area of the annulus and the radius of the smaller circle. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Problem 4
Math › Geometry › Pythagorean Theorem
How to find the radius of a circle centered at the origin, given the (x, y) coordinates of a point on the circle. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Problem 4
Math › Trigonometry › Pythagorean Theorem
How to find the radius of a circle centered at the origin, given the (x, y) coordinates of a point on the circle. 
Perimeter  Concept
Math › Geometry › Geometry Building Blocks
How to define perimeter and calculate it for squares, rectangles, and circles. 
Area of a Sector  Concept
Math › Geometry › Area
How to derive the formula to calculate the area of a sector in a circle. 
Constructing the Incenter  Problem 1
Math › Geometry › Constructions
How to construct the inscribed circle of a triangle using a compass and straightedge. 
Trigonometric Identities  Concept
Math › Trigonometry › Trigonometric Functions
How to use the unit circle to derive the tangent identity and the Pythagorean identity. 
Trigonometric Identities  Concept
Math › Precalculus › Trigonometric Functions
How to use the unit circle to derive the tangent identity and the Pythagorean identity. 
Area of a Sector  Problem 2
Math › Geometry › Area
How to find the radius of a circle when the area and arc measure are given. 
Trigonometric Identities  Problem 2
Math › Trigonometry › Trigonometric Functions
How to use the unit circle to show that cosine is an even function, and sine and tangent are odd functions. 
Trigonometric Identities  Problem 2
Math › Precalculus › Trigonometric Functions
How to use the unit circle to show that cosine is an even function, and sine and tangent are odd functions. 
Trigonometric Identities  Problem 3
Math › Trigonometry › Trigonometric Functions
How to use the unit circle to show that sine and cosine have period 2?, and tangent has period ?. 
Trigonometric Identities  Problem 3
Math › Precalculus › Trigonometric Functions
How to use the unit circle to show that sine and cosine have period 2?, and tangent has period ?. 
Graphing the Reciprocal Trigonometric Functions  Concept
Math › Trigonometry › Trigonometric Functions
How to use the unit circle to derive identities that are useful in graphing the reciprocal trigonometric functions. 
Graphing the Reciprocal Trigonometric Functions  Concept
Math › Precalculus › Trigonometric Functions
How to use the unit circle to derive identities that are useful in graphing the reciprocal trigonometric functions. 
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 Distance Formula in Polar Coordinates  Problem 3
Math › Precalculus › Polar Coordinates and Complex Numbers
How to derive the polar equation of a circle given its center and radius.