Khan Academy / High School / Math
Lecture : Trigonometric Identities
By Salman Khan | Trigonometry
Lecture 13 of 38
Rate this lecture -      More Lectures - Select Lecture...1 : Basic Trigonometry2 : Basic Trigonometry II3 : Radians and degrees4 : Using Trig Functions5 : Using Trig Functions Part II6 : The unit circle definition of trigonometric function7 : Unit Circle Definition of Trig Functions8 : Graph of the sine function9 : Graphs of trig functions10 : Graphing trig functions11 : More trig graphs12 : Determining the equation of a trigonometric function13 : Trigonometric Identities14 : Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)15 : Proof: cos(a+b) = (cos a)(cos b)-(sin a)(sin b)16 : Trig identities - part 217 : Trig identies part 318 : Trigonometry word problems - part 119 : Trigonometry word problems - part 220 : Law of cosines21 : Navigation Word Problem22 : Proof: Law of Sines23 : Ferris Wheel Trig Problem24 : Ferris Wheel Trig Problem - part 225 : Fun Trig Problem26 : Polar Coordinates 127 : Polar Coordinates 228 : Polar Coordinates 329 : Inverse Trig Functions: Arcsin30 : Inverse Trig Functions: Arctan31 : Inverse Trig Functions: Arccos32 : Trigonometry Identity Review/Fun33 : IIT JEE Trigonometry Problem 134 : IIT JEE Trigonometric Maximum35 : IIT JEE Trigonometric Constraints36 : Trigonometric System Example37 : 2003 AIME II Problem 11.avi38 : 2003 AIME II Problem 14

Course Description

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Courses Index
1 : Algebra I Review - High School   (Salman Khan / Khan Academy)
2 : Geometry   (Multiple Instructors / Brightstorm)
4 : Geometry – Worked Examples   (Salman Khan / Khan Academy)
5 : Fundamentals of Geometry   (James Sousa / MathIsPower4U)
6 : Algebra II   (Multiple Instructors / Brightstorm)
7 : Algebra II – 10th grade   (Derek Owens / Derek Owens)
8 : Algebra I - Martin Gay Textbook   (Julie Harland / MathGal)
9 : Algebra II - 2008 Prentice Hall Algebra 2 Textbook   (Brad Robb / WowMath)
10 : Algebra II – Worked Examples   (Salman Khan / Khan Academy)
11 : Algebra II - Worked Problems   (Brad Robb / WowMath)
12 : Pre-Calculus   (Multiple Instructors / Brightstorm)