4.2
Solving Basic Trigonometric Equations (None of these require identities or factoring or the quadratic formula or have double angles, etc.)
Solve Trig Equation 1: http://youtu.be/q8xFb3PGc-k
Solve Trig Equation 2: http://youtu.be/M2OHu-Zu3eQ
Solve Trig Equation 3: http://youtu.be/l29cr-54K5c
Solve Trig Equation 4: http://youtu.be/Cxjydt5m-2w
Solve Trig Equation 5: http://youtu.be/MuY-Y5q6BDk
Solve Trig Equation 6: http://youtu.be/sSRse53F5F8
Solve Trig Equation 7: http://youtu.be/O6Wvvc-k-4Y
Parts 8-10 show how to solve equations when a scientific calculator is needed.
Solve Trig Equation 8: http://youtu.be/CRbJjAyoifU
Solve Trig Equation 9: http://youtu.be/bZHHDjwXK7k
Solve Trig Equation 10: http://youtu.be/gZBzFpIQLVc
Solve Trig Equation 11: http://youtu.be/mGXavPbsLw4
(More involved equation)