Trigonometry 1.4
Trigonometric Definitions using ratios (1.4 of book I use in class)
Part 1: Introduction To Trig Function Definitions: http://youtu.be/lfGIx1SngeI
Part 2: Examples using Trig Definitions Part 1: http://youtu.be/F2L32pQ3OhY
Part 3: Examples using Trig Definitions Part 2: http://youtu.be/RQaAyQweynE
Part 4: Examples using Trig Definitions Part 3: http://youtu.be/Gw2qmNwzyv8
Part 5: Trig Functions for Quadrantal Angles Part 1: http://youtu.be/neZK5FWcT9I
Part 6: Trig Values for Quadrantal Angles Part 2: http://youtu.be/6BeWNpis-As
Part 7: Signs of Trig Values - ASTC: http://youtu.be/V1IDnMbrfGk
Part 8: Trig Functions for Multiples of 45° Part 1: http://youtu.be/htNzMsZdZnk
Part 9: Trig Functions for Multiples of 45° Part 2: http://youtu.be/0e7VSm44q-g
Part 10: Trig Functions for Multiples of 30° Part 1: http://youtu.be/wEbvmWegCa8
Part 11: Trig Functions for Multiples of 30° Part 2: http://youtu.be/UFBYNduJbZk
Part 12: Trig Functions for Multiples of 30° Part 3: http://youtu.be/iY_o9lp_EwY
Part 13: Trig Functions for Multiples of 30° Part 4: http://youtu.be/JogAlyK5QLY
Part 14: Cool Pattern for Special Angles: http://youtu.be/AhiBdwuPacM
Part 15: Mixed Examples of Trig Functions of Special Angles Part 1: http://youtu.be/0VMcwP-htkk
Part 16: Mixed Examples of Trig Functions of Special Angles Part 2: http://youtu.be/zF5BRUX5oQU
Evaluate Trig Functions with Calculator 1 (sin, cos, tan): http://youtu.be/XFwBM0DuIMI
Evaluate Trig Functions with Calculator 2 (csc, sec, cot): http://youtu.be/Qc_NmdJnc0c
Below is two-part series showing how to easily find the Trig functions for Special Angles. I made it before the series above.