Trigonometry Online Course, Khan Academy http://freevideolectures.com Lecture 1: Basic Trigonometry http://freevideolectures.com/Course/2558/Trigonometry/1 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 2: Basic Trigonometry II http://freevideolectures.com/Course/2558/Trigonometry/2 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 3: Radians and degrees http://freevideolectures.com/Course/2558/Trigonometry/3 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 4: Using Trig Functions http://freevideolectures.com/Course/2558/Trigonometry/4 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 5: Using Trig Functions Part II http://freevideolectures.com/Course/2558/Trigonometry/5 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 6: The unit circle definition of trigonometric function http://freevideolectures.com/Course/2558/Trigonometry/6 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 7: Unit Circle Definition of Trig Functions http://freevideolectures.com/Course/2558/Trigonometry/7 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 8: Graph of the sine function http://freevideolectures.com/Course/2558/Trigonometry/8 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 9: Graphs of trig functions http://freevideolectures.com/Course/2558/Trigonometry/9 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 10: Graphing trig functions http://freevideolectures.com/Course/2558/Trigonometry/10 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 11: More trig graphs http://freevideolectures.com/Course/2558/Trigonometry/11 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 12: Determining the equation of a trigonometric function http://freevideolectures.com/Course/2558/Trigonometry/12 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 13: Trigonometric Identities http://freevideolectures.com/Course/2558/Trigonometry/13 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 14: Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b) http://freevideolectures.com/Course/2558/Trigonometry/14 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 15: Proof: cos(a+b) = (cos a)(cos b)-(sin a)(sin b) http://freevideolectures.com/Course/2558/Trigonometry/15 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 16: Trig identities part 2 (parr 4 if you watch the proofs) http://freevideolectures.com/Course/2558/Trigonometry/16 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 17: Trig identies part 3 (part 5 if you watch the proofs) http://freevideolectures.com/Course/2558/Trigonometry/17 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 18: Trigonometry word problems (part 1) http://freevideolectures.com/Course/2558/Trigonometry/18 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 19: Trigonometry word problems (part 2) http://freevideolectures.com/Course/2558/Trigonometry/19 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 20: Law of cosines http://freevideolectures.com/Course/2558/Trigonometry/20 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 21: Navigation Word Problem http://freevideolectures.com/Course/2558/Trigonometry/21 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 22: Proof: Law of Sines http://freevideolectures.com/Course/2558/Trigonometry/22 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 23: Ferris Wheel Trig Problem http://freevideolectures.com/Course/2558/Trigonometry/23 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 24: Ferris Wheel Trig Problem (part 2) http://freevideolectures.com/Course/2558/Trigonometry/24 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 25: Fun Trig Problem http://freevideolectures.com/Course/2558/Trigonometry/25 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 26: Polar Coordinates 1 http://freevideolectures.com/Course/2558/Trigonometry/26 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 27: Polar Coordinates 2 http://freevideolectures.com/Course/2558/Trigonometry/27 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 28: Polar Coordinates 3 http://freevideolectures.com/Course/2558/Trigonometry/28 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 29: Inverse Trig Functions: Arcsin http://freevideolectures.com/Course/2558/Trigonometry/29 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 30: Inverse Trig Functions: Arctan http://freevideolectures.com/Course/2558/Trigonometry/30 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 31: Inverse Trig Functions: Arccos http://freevideolectures.com/Course/2558/Trigonometry/31 Sun, 10 Oct 2010 00:00:00 -0600 Lecture 32: Trigonometry Identity Review/Fun http://freevideolectures.com/Course/2558/Trigonometry/32 Sun, 10 Oct 2010 00:00:00 -0600