Note: The information on this page is for the 8th edition of the textbook.
Click here for the 7th edition information.
Click here for the 6th edition information.

Table of Contents:

Topics
Study Guidelines
Unit Pretest and Exam Description
Checklist

Topics
Calculators will be used extensively in this unit as we review and learn about the following topics:

• Conversions between radians, (decimal) degrees, and degrees-minutes-seconds (6.1)
• Applications: connection between radians and lengths of arcs
• Circular motion (6.1 and supplementary material)
• Evaluation of trigonometric functions with a calculator (make sure your calculator is set to the correct mode!) (6.2)
• Evaluation of trigonometric functions using a triangle (8.1)
• Solving right triangles, including applications (8.1)

Study Guidelines for the 8th edition of Sullivan's Precalculus

These reading and problem assignments are designed to help you learn the course material. You should complete all of these problems, check your answers in the back of the textbook, and get help with the problems that you missed. Most of the problems are odd-numbered, so you can check the solutions in the Solutions Manual.

The only way to learn mathematics is to do mathematics, so while these problems will not be collected or graded, you will probably not do well in the course if you do not complete these and check your work as described above. After completing these problems, go on to the Unit Exam Description below and follow directions.

• Section 6.1: Angles and Their Measure
  • Reading: section 6.1, pages 347-348 and 350-353
    Read and work through example 3 and examples 6-8 and their corresponding matched problems.
    Read the supplementary material on circular motion, and work through the examples.
  • Practice Problems:
    • 6.1 #23-33 odd, 59-111 odd
    • Circular Motion: problems #1-4 (solutions are included)
      
      
• Section 6.2: Trigonometric Functions: Unit Circle Approach
  • Reading: section 6.2, pages 367-368
    Read and work through example 11and its corresponding matched problems.
  • Practice Problems: 6.2 #67-81 odd, 115-123 odd
    
    
• Section 8.1: Applications Involving Right Triangles
  • Reading: section 8.1
    Read and work through examples 1-6 and 8-10 and their corresponding matched problems.
  • Practice Problems: 8.1 #1, 2, 9, 13, 17, 19, 21, 27, 29, 33, 39, 41, 43-53 odd, 57-61 odd, 65
    
    
• Supplementary material (optional):
  • Student Solutions Manual
  • Algebra Review booklet
  • CD lecture series (step-by-step video examples on CD)
  • For tutoring help, visit the Prentice Hall Tutor Center. Tutors can be contacted by phone, fax, or e-mail. To register, you will need the access code that came with your textbook.
  • Graphing Calculator Help

Unit 2 Pretest and Exam Description
After completing the above work, do the following:

1. Read the exam description:
   • This exam has 25 questions, and will count 20 points toward your grade. 
   • This exam has a one hour time limit.
   • This exam will probably take you more time than the Unit 1 Exam did. Approximately one-half of the questions are on section 8.1, and the other half are on 6.1-6.2.
   • Be sure to look under the entry box for the type of answer expected.
     • Some problems expect a list, separated by commas, such as 1/2,sqrt(3)/2,sqrt(3). The values must be listed in the order requested in the problem.
     • If an angle measure doesn't say "degrees" or use the degree symbol, then it is in radians.
     • None of the problems in this course require answers in terms of units (for example, "5 cm" or "3 ft"). In particular, questions asking for radians or degrees do not expect units (in fact, as noted on page 361, radian measure is a unitless number). Thus, you should not write answers like "pi/4 radians" or "45 degrees". Just write "pi/4" or "45" instead.
     • Some of the questions on this exam ask for an approximation instead of an exact answer. These questions will ask you to give an answer "with an accuracy of at least two decimals after the decimal point" (or possibly one decimal, or three decimals, etc.). In this case, you would have to enter at least two digits after the decimal point. For example, if you calculate your answer to be 1.41421356237, then you could enter 1.41, 1.414, 1.4142, etc. When you view your corrected exam, you will see that the "correct" answer is 1.41421356237  0.01. The symbol means "plus or minus", so anything within 0.01 of the first number counts as correct.
     • If a question does not ask for an approximation, then your answer must be exact.
   • Make sure your calculator is set to the correct mode (radians or degrees) for each question. If an angle measure in the question doesn't say "degrees" or use the degree symbol, then you should use radians.
2. Complete the online Unit 2 Pretest assignment for Math 141 or Math 142. You may use your book if you wish, and redo the pretest as many times as you like. Your pretest score will be scaled to 5 points maximum.
   • Directions: Click on the link above for your class, then choose the Unit 2 Pretest.
   • The pretest must be completed by the deadline date listed at the top of this page.
     However, you may redo the pretest as many times as you like before the due date.
     Your best score counts, and it will be rescaled to 5 points maximum.
3. If you are having trouble with any of the problems listed above or on the pretest or practice exams, make use of the help resources listed on the Help page.
4. Arrange with your proctor to take the online proctored Unit 2 Exam assignment for Math 141 or Math 142. Remember to bring identification, and remember that you will not be able to take the unit exam after the deadline date given at the top of this page. You may NOT use your book or notes on this exam.
   • Directions: Click on the link above for your class, then choose Unit 2 Exam.
   • The proctored unit exam must be completed by the deadline date listed at the top of this page, and may be repeated under certain conditions. See the Detailed Schedule page for Math 141 or Math 142 for specific rules.

   Note: Remember that you can always go back and take practice exams on this unit for Math 141 or Math 142 after the deadline has passed. In particular, this will help you prepare for the midterm and final exams.

   • Directions: Click on the link above for your class, then choose Unit 2 Practice Exam. After the deadline has passed, this exam will be available in practice mode.

Unit 2 Checklist

Make sure that you have completed the following items to complete Unit 2:

• Read the material listed in the Study Guidelines.
• Practice the problems listed in the Study Guidelines, and use any of the listed supplementary material to help you understand the concepts.
• Complete the online Unit Pretest (read the exam description first).
• Complete the online proctored Unit Exam.

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