Lumos Video Store
This page provides a list of educational videos related to Angle Identities. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Angle Identities.
Double angle formula for cosine example | Trig identities and examples | Trigonometry | Khan Academy
By Khan Academy
Double angle formula for cosine example | Trig identities and examples | Trigonometry | Khan Academy
Symmetry and periodicity of trigonometric functions
By Khan Academy
Sal finds trigonometric identities for sine and cosine by considering angle rotations on the unit circle.
Symmetry and periodicity of trigonometric functions
By Khan Academy
Sal finds trigonometric identities for sine and cosine by considering angle rotations on the unit circle.
Manipulating trig expressions with pythagorean identities
By Khan Academy
Sal reviews all the different trigonometric angle addition identities: sin(a+b), sin(a-c), cos(a+b), cos(a-b), cos(2a), and sin(2a).
Addition and subtraction trig identities
By Khan Academy
Sal reviews all the different trigonometric angle addition identities: sin(a+b), sin(a-c), cos(a+b), cos(a-b), cos(2a), and sin(2a).
Orthogonal matrices preserve angles and lengths | Linear Algebra | Khan Academy
By Khan Academy
Showing that orthogonal matrices preserve angles and lengths. All Khan Academy content is available for free at www.khanacademy.org
Newman Projections
By The Organic Chemistry Tutor
This organic chemistry video tutorial provides a basic introduction into newman projections. It explains how to draw the newman projections of ethane, butane, and 2,3-dimethylpentane. It explains how to draw the eclipsed and staggered conformations of ethane as well as the gauche and anti conformations of butane. It explains how to use conformational analysis to determine which conformation is most stable.
05 - What is a Radian Angle? Convert Degrees to Radians & Radians to Degrees - Part 1
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!
Trigonometric Substitution
By The Organic Chemistry Tutor
This calculus video tutorial provides a basic introduction into trigonometric substitution. It explains when to substitute x with sin, cos, or sec. It also explains how to perform a change of variables using u-substitution integration techniques and how to use right triangle trigonometry with sohcahtoa to convert back from angles in the form of theta to an x variable. There's plenty of examples and practice problems in this lesson.
