Twenty-four (24) exercises from Cohen whose solutions are due:

6.3   Right-triangle Applications, page 451:

1, 3, 7, 30, 35, 37

6.4   Trigonometric Functions of Angles, page 469:

1, 11, 41, 43, 47, 49, 51, 63, 64, 71

6.5   Trigonometric Identities, page 477:

1, 5, 11, 16, 17, 25, 27, 29