350 Videos for "angles"

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. 
Applied Linear Equations: Geometry Problem  Concept
Math › Precalculus › Linear Equations and Inequalities
How to find the angles of a triangle by creating a linear equation. 
Applied Linear Equations: Geometry Problem  Concept
Math › Algebra 2 › Linear Equations
How to find the angles of a triangle by creating a linear equation. 
Finding the Roots of a Complex Number  Problem 3
Math › Precalculus › Polar Coordinates and Complex Numbers
How to use DeMoivre's Theorem and the halfangle formulas to compute the cube roots of a complex number. 
Vector Operations in 3D  Problem 1
Math › Precalculus › Vectors and Parametric Equations
How to find the angle between two vectors in 3D, and how to tell whether two vectors are parallel or perpendicular. 
ASA and AAS  Concept
Math › Geometry › Triangles
How to use the ASA and AAS shortcuts to determine the congruence of two triangles. 
ASA and AAS  Problem 1
Math › Geometry › Triangles
How to use ASA and AAS to determine congruence of triangles and denote the congruence correctly. 
ASA and AAS  Problem 3
Math › Geometry › Triangles
How to use ASA and AAS to determine the congruence of adjacent triangles and denote the congruence correctly. 
ASA and AAS  Problem 2
Math › Geometry › Triangles
How to use ASA and AAS to determine the congruence of vertical triangles and denote the congruence correctly. 
ASA and AAS  Problem 4
Math › Geometry › Triangles
How to use ASA and AAS to determine the congruence of adjacent triangles and denote the congruence correctly. 
Isosceles Triangles  Concept
Math › Geometry › Triangles
How to define isosceles triangles, their components and how to determine their properties. 
Parallelogram Properties  Concept
Math › Geometry › Polygons
How to identify all of the special properties of parallelograms and use them to solve problems. 
Parallelogram Properties  Problem 3
Math › Geometry › Polygons
How to find the lengths of the diagonals in a parallelogram if they are given in terms of a variable. 
Parallelogram Properties  Problem 2
Math › Geometry › Polygons
How to find the perimeter of a parallelogram when the sides are given in terms of a variable. 
Kite Properties  Concept
Math › Geometry › Polygons
How to identify a kite and its special properties. 
Area of Kites and Rhombuses  Problem 3
Math › Geometry › Area
How to calculate the area of a rhombus given the length of half of the diagonals. 
Area of Kites and Rhombuses  Problem 2
Math › Geometry › Area
How to find the length of a diagonal in a kite given the area and the length of the other diagonal. 
Area of Kites and Rhombuses  Concept
Math › Geometry › Area
How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths. 
Similar Triangles in Circles and Right Triangles  Problem 1
Math › Geometry › Similarity
How to find missing side lengths of triangles in a circle. 
Cyclic Quadrilaterals and Parallel Lines in Circles  Problem 2
Math › Geometry › Circles
How to calculate the measure of an arc created by a cyclic parallelogram.