This PDF contains a useful review of trig graph transformations:
Block E
https://docs.google.com/a/ismanila.org/file/d/0B519A0sNLQYMY1ZORDZld3lTdm8/edit?usp=sharing
Block G
https://docs.google.com/a/ismanila.org/file/d/0B519A0sNLQYMbi1jRm82LWl1QUU/edit?usp=sharing