Notes from Trigonometry

Since these notes grew as a supplement to a textbook, the majority of the problems in the supplemental problems (of which there are several for almost every lecture) are more challenging and less routine than would normally be found in a book of trigonometry (note there are several inexpensive problem books available for trigonometry to help supplement the text of this book if you find the problems lacking in number). Most of the problems will give key insights into new ideas and so you are encouraged to do as many as possible by yourself before going for help.