1．ANGLES AND ARC LENGTH 1
2．TRIGONOMETRIC FUNCTIONS OF A GENERAL ANGLE 8
3．TRIGONOMETRIC FUNCTIONS OF AN ACUTE ANGLE 19
4．TABLES OF TRIGONOMETRIC FUNCTIONS—SOLUTION OF RIGHT TRIANGLES 25
5．PRACTICAL APPLICATIONS 32
6．LOGARITHMS 41
7．LOGARITHMIC SOLUTION OF RIGHT TRIANGLES 49
8．REDUCTION TO FUNCTIONS OF POSITIVE ACUTE ANGLES 54
9．VARIATIONS AND GRAPHS OF THE TRIGONOMETRIC FUNCTIONS 62
10．FUNDAMENTAL RELATIONS AND IDENTITIES 68
11．TRIGONOMETRIC FUNCTIONS OF TWO ANGLES 74
12．SUM,DIFFERENCE,AND PRODUCT FORMULAS 84
13．OBLIQUE TRIANGLES,NON-LOGARITHMIC SOLUTION 88
14．LOGARITHMIC SOLUTION OF OBLIQUE TRIANGLES 101
15．AREAS．RADII OF INSCRIBED AND CIRCUMSCRIBED CIRCLES 109
16．INVERSE TRIGONOMETRIC FUNCTIONS 118
17．TRIGONOMETRIC EQUATIONS 125
18．COMPLEX NUMBERS 134
19．TOPICS FROM SOLID GEOMETRY 146
20．RIGHT SPHERICAL TRIANGLES 155
21．OBLIQUE SPHERICAL TRIANGLES—STANDARD SOLUTIONS 168
22．OBLIQUE SPHERICAL TRIANGLES—ALTERNATE SOLUTIONS 180
23．COURSE AND DISTANCE 188
24．THE CELESTIAL SPHERE 199
INDEX 205