Trigonometry - Fall 2020 - Tues and Thurs 12-12:50am - Room 228 (zoom)

Instructor: Ted Wetherbee

Fond du Lac Tribal & Community College
2101 14th Street
Cloquet, Minnesota 55720

Office: W217
Phone: 218-879-0840

Fall 2019 Class Schedule:
  8-8:50am   MTWHF  Calculus 1           Room 228 (zoom)
  12-12:50pm MWF    College Algebra      Room 230 (zoom)
  12-12:50pm TH     Trigonometry         Room 228 (zoom)

Office Hours in Room W217: (zoom)
  Monday   Tuesday  Wednesday  Thursday  Friday
  11-noon  11-noon  11-noon    11-noon   11-noon

Course Syllabus:

Class materials will be online on D2L under Content. For easier recollection, you can find this course from this URL:

Zoom Class Meetings, Email, Videos

We are starting the semester with zoom classes and may continue using zoom through the semester. Install a zoom client on your computer with a microphone, speaker, and camera. There are zoom apps for iphone and android phones. Test zoom out between devices.

For zoom class sessions, login to D2L and note the zoom ID and password for zoom class meetings. These probably will not change for the course; I would let you know by email if there are changes.

Check your email daily! This is how I'll communicate with the entire class.

Some videos will be put online. You can check this one out to see how they play on your devices:


Make sure that you can view this. If you want to see closed captions (CC), they are in this video. Make sure that your video player can show CC if you want them.


Get to know your star ID and password for D2L and email, and check you email daily! Everything will be online from D2L when you login to the course.

Textbook (Free online; inexpensive in the FDLTCC bookstore)

Trigonometry, by Michael Corral
Textbook Web Site:
The bookstore ordered printed copies, and these are relatively inexpensive.  However,
this book is also free.

Local PDF of textbook :


You may have a calculator already, but make sure that it is a scientific calculator. If you need to buy one, I recommend a cheap calculator like a TI-30XS Multiview. This does what you need, and the bookstore sells them for under $20 . If you have a problem getting one, let me know. You need to have it available for all assignments. You do not need a more expensive graphing calculator, but, if you have one, it will be fine.

SageMath: SageMathCell

This is software like Mathematica and Maple which can do symbolic algebra, graphing, and many other mathematical things, but SageMath is free. A jupyter notebook with SageMath should be available later in this course; in the meanwhile, SageMathCell from the link above works well.

Exams and Grading

2 tests     2x100 = 200
1 final             150
15 homework 5x15 =  75
                    425 total

90-100%   A
80-90%    B
70-80%    C
60-70%    D
0-60%     F

The Course

This course addresses FDLTCC liberal education requirements (Competencies Across the Curriculum) in problem solving and technology. You should come to class everyday! This is the easy way to do well in any course, and it is especially true for math classes. There are exercises in the text for you to do, and these are usually answered at the end of each chapter. You will also get homework assignments on handouts, and you should complete then hand these in at the beginning of the next class. You homework grade is based on completing and turning in these homework handouts. You will also get sample exams which will be similar in length and content to the in-class exams. Let me know if there is are accommodations you need for the class.

Tentative Schedule

Tue aug25  1 1.1 angles                          h1 (D2L)
Thu aug27  2 1.2 trig functions of acute angles  h2 (D2L)

Tue sep01  3 1.3 solving right triangles         h3 (D2L)
Thu sep03  4 1.3

Tue sep08  5 1.4 trig functions of any angle     h4 (D2L)
Thu sep10  6 2.1 law of sines                    h5 (D2L)

Tue sep15  7 2.2 law of cosines                  h6 (D2L)
Thu sep17  8 2.2                  

Tue sep22  9 2.4 area of a triangle                    h7 (D2L)
Thu sep24 10 2.5 circumscribed and inscribed triangles h8 (D2L)

Tue sep29 11 T1  review, T1 (D2L)
Thu oct01 12 3.1 basic trig identities            h9 (D2L)

Tue oct06 13 3.1
Thu oct08 14 3.2 sum and differences formulas     h10 (D2L)

Tue oct13 15 3.3 double and half angles formulas  h11
Thu oct15 NC No Classes

Tue oct20 16 4.1 radians and degrees   
Thu oct22 17 4.2 arc length; 4.3 area of a sector; 

Tue oct27 18 4.4 cicular motion; linear and angular speed
Thu oct29 19 5.1 graphing trig functions         

Tue nov03 20 5.2 properties of graphs of trig functions
Thu nov05 21 5.3 inverse trig functions        

Tue nov10 22 T2                                 
Thu nov12 23 6.1 solving trig equations          

Tue nov17 24 6.3 complex numbers                
Thu nov19 25 6.3                              

Tue nov24 26 6.3                                 
Thu nov26  H Holiday

Tue dec01 27 vectors                            
Thu dec03 28 vectors and dot product            

Tue dec08 29 cross products and applications
Thu dec10 30 final exam review                  

Tue dec17 T1 12-1:50pm Room 228 (math1015)
Wed dec18 T2 
Thu dec19 T3
Fri dec20 T4

Fall Semester 2020 Last Day to Withdraw: November 25th, 2020

Plagiarism, or presenting the writing of another as your own (a.k.a. “copying”), results in an F for this course and is subject to any other disciplinary actions mandated by this institution and the Minnesota State system.

Disabilities Notice Fond du Lac Tribal & Community College is committed to providing equitable access to learning opportunities for all students. Under the Americans with Disabilities Act and Section 504 of the Rehab Act, Fond du Lac Tribal & Community College provides students with disabilities (e.g., mental health, attentional, learning, chronic health, sensory or physical) reasonable accommodation to participate in educational programs, activities or services. Students with disabilities requiring accommodation to participate in class activities or meet course requirements should first complete an intake form and necessary requirements with Nancy Olsen, Disability Services coordinator, to establish an accommodation plan. She can be reached at or 218-879-0819.

Sexual Violence
Fond du Lac Tribal & Community College is committed to providing an environment free of all forms of discrimination and sexual harassment, including sexual assault, domestic and dating violence, gender or sex-based bullying and stalking. If you or someone you know has experienced gender or sex-based violence (intimate partner violence, attempted or completed sexual assault, harassment, coercion, stalking, etc.), know that you are not alone. Fond du Lac Tribal & Community College has staff members trained to support survivors in navigating campus life, accessing resources, providing accommodations, assistance completing with protective orders and advocacy. For more information regarding the Campus Security Report, the following link will give you a report on the Clery Compliance and Security Report at FDLTCC:

Please be aware that all Fond du Lac Tribal & Community College employees are required to report any incidents of sexual violence and, therefore it cannot guarantee the confidentiality of a report, but it will consider a request for confidentiality and respect it to the fullest extent possible. If you wish to report sexual misconduct or have questions about school policies and procedures regarding sexual misconduct, please contact Anita Hanson, Dean of Student Services, at 218-879-0805 or
Content is neither approved nor reviewed by FDLTCC.