1. Math 120: Pre-calculus 2 Instructor: Mike Panitz (mpanitz@cascadia.ctc.edu)

2. Math 120: Pre-Calculus 22 Today Law of Sines –(8.2 / 4e (10.2 / 3e)) Law of Cosines –(8.3 / 4e (10.3 / 3e)) Go over Exam #2

3. Math 120: Pre-Calculus 23 Next Lecture Area of Triangle –(8.4 / 4e (10.4 / 3e)) Polar Coordinates –(9.1 / 4e (11.1 / 3e))

4. Math 120: Pre-Calculus 24 Homework All homeworks will be collected on the last day class (Mar 16 th ) –Collected at the beginning of class If you don’t have it @ the start of the exam, you can hand it in later that day, to room 154. –If you don’t hand it (all) in that day, you will get a zero for any missing homework assignments.

5. Math 120: Pre-Calculus 25 End-Of-Lecture Slides

6. Math 120: Pre-Calculus 26 Exam #2 Overall, pretty good (Mean = 80%) Problem areas: –Inverse Trig Functions –

7. Math 120: Pre-Calculus 27 Study Quiz Almost the same deal as last time: –Quiz will be on one of the three ‘problem areas’ –Will be 1, maybe 2 questions –Will be added onto the Exam #2 grade –Total grade for Exam #2 can’t go past 100 Will happen next Thursday, at the end of class

8. Math 120: Pre-Calculus 28 Grade Summary 2 objectives: –Let you know how you’re doing –Let me know if there are any errors If you find an error, show me the paper that proves something needs to be changed (i.e., the exam, etc)

9. Math 120: Pre-Calculus 29 HW Correction HW block #1 “correction” –We were short 8 points for that first block Should have had 32, actually had 24 –I added to each student’s grade (8 points) * (the % of HW block #1 that you got) Example: –If you got 21 / 24 on the homework, you got a correction (addition) that was 8 * (21/24) = 7 points