Today was the day to learn how to solve equations with trigonometric expression in them. In other words, you solve an equation and get to the end with something like sin x = .5
The big issue is what to do when you get to this last step. The main answer: put on your thinking cap, know your unit circle, pay attention to details.
I have attached the class notes. Not sure how much they will help if you were not here.
All of the questions are odd numbered on the homework, so you should be able to use calcchat.com to see answers. Don't forget that some questions have video: scan the textbook with your phone and you will see the video.
Some of the questions in the 30's are a bit difficult. Do your best; check answers; play with it and see if you can get the correct answers. It will take time, even though there are only 20 problems.
If I have not yet seen your factoring work, please bring that completed next time. Read previous post for an additional 12 problems that need to be finished in addition to the worksheet.
Also attached below: assignment sheet/schedule for the unit.
Students got to see their tests (if they were still here when I passed them out). All tests are posted.
HW #7: pp 370-1: 1-5, 9-45 odd, 49. Only 49 can be answered with calculator. All the rest must have answer in terms of Pi.
On problem 37, square both sides of the equation and then use the identity for csc squared x = 1 + cot squared x; then factor out 2 cot x.
On #35: Get a common denominator. If a fraction = 0, then the numerator must =0 because the denominator cannot = 0.
Set numerator = 0. IF you get a squared term = to a negative number, that is not possible, so no solution.
The big issue is what to do when you get to this last step. The main answer: put on your thinking cap, know your unit circle, pay attention to details.
I have attached the class notes. Not sure how much they will help if you were not here.
All of the questions are odd numbered on the homework, so you should be able to use calcchat.com to see answers. Don't forget that some questions have video: scan the textbook with your phone and you will see the video.
Some of the questions in the 30's are a bit difficult. Do your best; check answers; play with it and see if you can get the correct answers. It will take time, even though there are only 20 problems.
If I have not yet seen your factoring work, please bring that completed next time. Read previous post for an additional 12 problems that need to be finished in addition to the worksheet.
Also attached below: assignment sheet/schedule for the unit.
Students got to see their tests (if they were still here when I passed them out). All tests are posted.
HW #7: pp 370-1: 1-5, 9-45 odd, 49. Only 49 can be answered with calculator. All the rest must have answer in terms of Pi.
On problem 37, square both sides of the equation and then use the identity for csc squared x = 1 + cot squared x; then factor out 2 cot x.
On #35: Get a common denominator. If a fraction = 0, then the numerator must =0 because the denominator cannot = 0.
Set numerator = 0. IF you get a squared term = to a negative number, that is not possible, so no solution.
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