359 Videos for "angles"

Central Angles and Intercepted Arcs  Concept
Math › Geometry › Circles
How to define a central angle and find the measure of its intercepted arc; how to describe the intercepted arcs of congruent chords. 
Evaluating Sine and Cosine at Other Special Angles  Concept
Math › Precalculus › Trigonometric Functions
How to measure the sine and cosine of 150. 
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. 
Evaluating Sine and Cosine at Other Special Angles  Problem 1
Math › Precalculus › Trigonometric Functions
How to measure the sine and cosine of 135?. 
The Angle Between Planes  Concept
Math › Precalculus › Vectors and Parametric Equations
How to find the angle between planes, and how to determine if two planes are parallel or perpendicular. 
Other Forms of the Cosine DoubleAngle Formula  Concept
Math › Precalculus › Advanced Trigonometry
How to derive two more cosine doubleangle formulas. 
Other Forms of the Cosine DoubleAngle Formula  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive two more cosine doubleangle formulas. 
Evaluating Sine and Cosine at Other Special Angles  Problem 3
Math › Trigonometry › Trigonometric Functions
How to measure the sine and cosine of 5?/3. 
Evaluating Sine and Cosine at Other Special Angles  Problem 3
Math › Precalculus › Trigonometric Functions
How to measure the sine and cosine of 5?/3. 
Radian Measure of Angles  Problem 2
Math › Trigonometry › Trigonometric Functions
How to convert to radians when degrees are given. 
Other Forms of the Cosine DoubleAngle Formula  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the cosine doubleangle formulas to derive the power reduction formulas. 
Radian Measure of Angles  Problem 2
Math › Precalculus › Trigonometric Functions
How to convert to radians when degrees are given. 
Evaluating Sine and Cosine at Other Special Angles  Problem 2
Math › Precalculus › Trigonometric Functions
How to measure the sine and cosine of 11*pi/6. 
Constructing an Angle Bisector  Concept
Math › Geometry › Constructions
How to define and construct an angle bisector. 
Other Forms of the Cosine DoubleAngle Formula  Problem 1
Math › Precalculus › Advanced Trigonometry
How to use the cosine doubleangle formulas to derive the power reduction formulas. 
The Angle Between Vectors  Problem 2
Math › Precalculus › Vectors and Parametric Equations
How to determine whether two vectors are perpendicular or parallel. 
Evaluating Sine and Cosine at Other Special Angles  Problem 2
Math › Trigonometry › Trigonometric Functions
How to measure the sine and cosine of 11*pi/6. 
Angle Bisectors and Opposite Side Ratios  Problem 1
Math › Geometry › Similarity
How to find a missing length created by a median in a triangle using a proportion. 
Central Angles and Intercepted Arcs  Problem 4
Math › Geometry › Circles
How to find the measure of an arc created by the vertices of an inscribed regular polygon. 
Central Angles and Intercepted Arcs  Problem 3
Math › Geometry › Circles
How to find the measure of an intercepted arc given the measure of two arcs.