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

Today Trig Equations: Review for Exam #2 Section (7.7-7.8 / 4e (9.7-9.8 / 3e)) Review for Exam #2 Math 120: Pre-Calculus 2

Next next Lecture Law of Sines Law of Cosines (8.2 / 4e (10.2 / 3e)) Math 120: Pre-Calculus 2

Next Lecture: Exam #2 You’re allowed to bring ONE 3”x5” card, filled front & back, with all the handwritten notes that you can fit onto it. Calculators will (again) be reset at the start of the exam Math 120: Pre-Calculus 2

Exam #2: Study Tips Go back & make sure you’re able to answer all the problems from Exam #1, the Complementary Angles quiz, the in-class exercises, and the homework problems. Math 120: Pre-Calculus 2

Exam #2: Possible Topics Possible Topics include, but are not limited to: “Fill in trig functions, using identities” For each function: No identity, no points Establishing trig identities If you want to use a rearranged trig identity, then rearrange it in a box, off to the side, like you saw in class Prove that sin(2A)=2sinAcosB, etc (using sin(A+B)) INVERSE TRIG FUNCTIONS Math 120: Pre-Calculus 2

Exam #2 Not on the exam: Prove that sin(45°) = Math 120: Pre-Calculus 2

Homework All homeworks will be collected on the day of the next exam (Feb 23rd) This is NEXT LECTURE Collected at the beginning of class Hand them in before you start the exam 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. Math 120: Pre-Calculus 2

Homework Homeworks are divided up into “blocks” One block is collected per exam (Block #1 was collected piecemeal, in order to get ya’ll in the habit of doing your HW daily) Each block is worth 32 points. MAKE SURE YOU HAND IN YOUR HOMEWORK ON THURSDAY!!!! Math 120: Pre-Calculus 2

Homework & Quiz Remaining HW from block 1 will be handed back at the end of lecture today The quiz will be handed back at the end of lecture, after the 2 remaining people have taken it. We’ll then go over the quiz @ End of lecture: Q+A if you’ve got any questions Math 120: Pre-Calculus 2