Listed below are the topics and exercises to review for the 4th midterm exam on Wednesday Dec 13.

Note that the MAT1275 Final Exam Review sheet is available as a pdf inÂ Files, and is also available in the Final Exam Review post.

**Law of Sines & Law of Cosines:**- Final Exam Review: #7
- WebWork: “Law of Sines” (Problems 3-6)
- WebWork: “Law of Cosines” (Problems 1-3)
- Patrick JMT videos: http://patrickjmt.com/the-law-of-sines-example-1/, http://patrickjmt.com/the-law-of-sines-example-2/, http://patrickjmt.com/law-of-cosines-example-5/

**Proving Trig Identities:**- “Trigonometric Identities Worksheet” (handed out in class on Fri Dec 8, pdf available inÂ Files; the exercises on the last 2 pages are due Wednesday)
- Final Exam Review: #10
- Trig textbook, Sec 1.4: Examples 2-4 (pp32-33)
- Trig textbook, Sec 5.1: Examples 1 & 2 (pp212-213)
- PatrickJMT videos: http://patrickjmt.com/proving-an-identity-example-1/ & http://patrickjmt.com/proving-an-identity-example-2/

**Solving Trig Equations (using the unit circle)**- Final Exam Review #11
- Quiz #8: question #2
- WebWork: â€śSolvingTrigEquationsâ€ť (Problems 1-7)
- PatrickJMT video: http://patrickjmt.com/solving-trigonometric-equations/

**Trigonometry in the coordinate plane (i.e., f****inding the values of the trig functions based on the value of one trig function and information about the sign of one other trig function):**

- Final Exam Review: #8
- Exam #3, question #5
- WebWork: “CoordinatePlaneTrig”
**(**Problems 1-5) - Trigonometry textbook: Section 1.3, pages 22-27
- PatrickJMT video: http://patrickjmt.com/finding-trigonometric-values-given-one-trigonometric-valueother-info-example-2/

This exam will also include one algebra topic from earlier in the semester:

**Solving systems involving nonlinear equations**- Final Exam Review: #7
- Exam #2
question #5**:** - Algebra textbook, Sec 9.4: Example 1(b) (p777), Example 4 (p779)