College Trigonometry 1st edition

Textbook Cover

Carl Stitz and Jeff Zeager
Publisher: Open Educational Resources

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  • Chapter 1: Foundations of Trigonometry
    • 1.1: Angles and their Measure (25)
    • 1.2: The Unit Circle: Cosine and Sine (52)
    • 1.3: The Six Circular Functions and Fundamental Identities (57)
    • 1.4: Trigonometric Identities (28)
    • 1.5: Graphs of the Trigonometric Functions (28)
    • 1.6: The Inverse Trigonometric Functions (87)
    • 1.7: Trigonometric Equations and Inequalities (66)

  • Chapter 2: Applications of Trigonometry
    • 2.1: Applications of Sinusoids (7)
    • 2.2: The Law of Sines (10)
    • 2.3: The Law of Cosines (15)
    • 2.4: Polar Coordinates (30)
    • 2.5: Graphs of Polar Equations (30)
    • 2.6: Hooked on Conics Again (8)
    • 2.7: Polar Form of Complex Numbers (17)
    • 2.8: Vectors (17)
    • 2.9: The Dot Product and Projection (41)
    • 2.10: Parametric Equations (14)

WebAssign, the independent online homework and assessment solution, is proud to announce a new partnership with the open source teaching community. College Trigonometry, is authored by Carl Stitz of Lakeland Community College and Jeff Zeager of Lorain County Community College, winners of the University System of Ohio Faculty Innovation Award. This textbook, available through the Orange Grove Texts Plus open source content repository, is now supported by homework questions and student learning resources within WebAssign.

Learn more about the project in the authors' own words.

WebAssign Content for the College Trigonometry project includes:

  • Approximately three fourths of the Exercises from the text
  • Multi-part exercises offered both as single Capstone items or assignable as individual items
  • Applicable sections of the text linked to individual questions
  • Video and web resources linked from each question
  • Tutorial items that interactively step students through problem-solving strategies
Question Group Key
cap - Capstone Multi-part Exercises
part - Individual assignable parts of the Capstone


Question Availability Color Key
BLACK questions are available now
GRAY questions are under development


Group Quantity Questions
Chapter 1: Foundations of Trigonometry
1.1 25 001a 001c 002a 002d 003a 003c 003d 003e 003g 004a 004b 004c 004h 005a 005b 005c 005d 005e 005f 005h 006 008 010a 010b 010c
1.2 52 001a 001b 001c 001d 001e 001f 001g 001h 001i 001k 001l 001m 001o 001p 001q 001r 001t 002a 002b 002c 002d 002e 002f 003a 003b 003c 003d 003e 003f 004a 004b 004c 004d 004e 004f 004g 004h 004i 005a 005b 005c 005d 006a 006b 006c 006d 006e 006f 007a 007b 007c 007d
1.3 57 001a 001b 001c 001d 001e 001f 001g 001h 001i 001j 001k 001l 001m 001n 001o 001p 001q 001r 001s 001t 002a 002b 002c 002d 002e 002f 003a 003b 003c 003d 003e 003f 003g 003h 004a 004b 004c 004d 004e 004f 004g 004h 004i 004j 004k 005a 005b 005c 005d 005e 005f 005g 005h 005i 006 008 010
1.4 28 005a 005b 005c 005d 005e 005f 009a 011 012 013 014a 014b 014c 015a 015b 015c 015d 016 017 025a 025b 025c 026a 026b 026c 026d 026e 026f
1.5 28 001a 001b 001c 001d 001e 001f 001g 001h 001i 001j 001k 001l 002a 002b 002c 002d 002e 002f 002g 002h 002i 002j 002k 002l 003a 003b 003c 003d
1.6 87 001a 001b 001c 001d 001e 001f 001g 001h 001i 002a 002b 002c 002d 002e 002f 002g 002h 002i 003a 003b 003c 003d 003e 003f 003g 004a 004b 004c 004d 004e 004f 004g 005a 005b 005c 005d 005e 005f 005g 005h 006a 006b 006c 006d 007a 007b 007c 007d 008a 008b 008c 008d 009a 009b 009c 009d 010a 010c 010e 010i 010k 010l 010n 010p 011a 011b 011c 011d 011e 011f 011g 011h 011i 011j 011k 011l 018a 018b 018d 018e 018g 018i 018j 018n 019a 019b 019c
1.7 66 001a 001b 001c 001d 001e 001f 001g 001h 001i 001j 001k 001l 001m 001n 001o 002a 002b 002c 002d 002e 002f 002g 002h 002i 002j 002k 002l 002m 002n 002o 002p 002q 002r 002s 002t 003a 003b 003c 003d 003e 003f 003g 004a 004b 004c 004d 004e 005a 005b 005c 005d 006a 006b 006c 006d 006e 006f 006g 006h 007a 007b 007c 007d 007e 007f 007g
Chapter 2: Applications of Trigonometry
2.1 7 001 002 003 004 005 006 007
2.2 10 001a 001b 001e 001g 001i 001l 001o 001t 002 003
2.3 15 001a 001b 001f 001g 001j 002a 002b 002f 003a 003b 003c 004 005 006 007
2.4 30 001a 001b 001c 001d 001e 001f 002a 002b 002c 002d 002e 002f 003a 003b 003c 003d 003e 003f 004a 004b 004c 004d 004e 004f 005a 005b 005c 005d 005e 005f
2.5 30 001b 001c 001e 001f 001g 001i 001k 001l 001n 001o 001p 001r 002a 002b 002c 002d 002e 002f 003a 003b 004a 004b 004c 004d 007b 007d 007e 007h 007i 007j
2.6 8 001a 001b 001c 001d 002a 002b 002c 002d
2.7 17 001a 001b 001c 001d 002a 002b 002c 002d 003a 003b 003c 003d 003e 003f 004a 004b 004c
2.8 17 001a 001b 001c 001d 001e 001f 001g 001h 001i 001j 001k 002 003 004 006 007 008
2.9 41 001a.cap 001a.part1 001a.part2 001a.part3 001a.part4 001b.cap 001b.part1 001b.part2 001b.part3 001b.part4 001c.cap 001c.part1 001c.part2 001c.part3 001c.part4 001d.cap 001d.part1 001d.part2 001d.part3 001d.part4 001e.cap 001e.part1 001e.part2 001e.part3 001e.part4 001f.cap 001f.part1 001f.part2 001f.part3 001f.part4 001g.cap 001g.part1 001g.part2 001g.part3 001g.part4 001h.cap 001h.part1 001h.part2 001h.part3 001h.part4 002
2.10 14 001a 001b 001c 001d 002a 002b 002c 002d 003a 003b 003c 003d 003e 003f
Total 532