This is what we did today in class:
- On original blue unit circle sheet, go to the back where you have only coordinates on unit circle. Since sin = y coordinate and cos = x coordinate and tangent = sin/cos, you can find the tangent value at any special point on the unit circle. Write these in radical form and notice patterns. Can I always look on the other end of the diameter to get the same value?
- Read top of p 322 for Inverse Function Properties – basically f(f-1(x)) = x, f-1f(x) = x. So is arccos(cos(-3π/2) = -3π/2? No, because it is not in the range of acceptable values for a cosine function, so we have to check unit circle to find a radian between 0 and Pi that will be the same (pi/2).
- Finish out worksheet 1. Answering questions. Make sure you look out for the "oddballs" on the calculator section... no way to just put it in and write the answer you see, you have to think.
- Now finish worksheet 2 in class. Check answers from my blog post.
- If you finish, then I will take a 6 pt grade over the two worksheets together for HW #1 – 6 pts.
- View tests.
- HW #2 – due Monday – pp324-5: 1-4, 5-17odd, 21-29odd, 39-49odd, 51-57odd, 63-69odd
Remember that you can check you odd answers and see a little bit of work: http://calcchat.com/book/Precalculus-with-Limits-4e:-High-School/
Or you can scan the QR code next to problems in the book and watch videos.