This week we will be starting a new Trigonometric Identity Chapter which will involve deriving some key angle formulas and applying them to find exact values. The early part of the chapter will involve a lot of memorizing and applying some relatively long identities and you will really need to be sure you have mastered much of the material from Chapter 3 (working with the unit circle, definition of all the trig functions and their reciprocals etc.) To start off the week I want to see who is following this blog and who is actively reading their textbook and involve some students in actually creating the weekly assignment sheet and responding to some questions.
Three Key Things
- I had mentioned to some D-period students that since they had completed their after test assignment more thoroughly than others, they may get an extra credit opportunity. That opportunity is now if you go to the Ch. 6 draft assignment sheet and replace the ???? with the written objectives (find in your textbook) or names of the identities (find in textbook). Each student to fill in an objective or key identity will be exempt from part of a future homework. Access the draft assignment sheet by clicking the link below and it should let you make edits. https://docs.google.com/document/d/1vUohN90Jrh5DBIpLOPXEy6FgyR6yl_DvtYm4eR5uC7g/edit
- Secondly, for anyone who wants to answer any of the questions below by posting a comment to this blog, you may also receive reduced homework in the near future if you answer accurately. [D- or C-Period: Only one response per question, check comments before replying]
- The assignment sheet is a "working assignment sheet" some of the problem sets may change but not by much and we are actually starting out with 6.2 which is not on the assignment sheet but will be announced in class. Our first quiz for this Chapter will probably be Friday Day3.
1) Describe what "dead reckoning" is for ship navigation and explain how you think this may have changed given more current technologies.
2) How is a ship navigation angle reading convention different than the angle convention we use in Trigonometry class.
3) Describe what a "knot" in terms of sailing navigation and provide a little history by doing some online research as to where the measurement of "knots" came from.
4) What is a sextant and how is it used?
5) What are the similarities and differences between the cos (A+/-B) and sin (A+/-B) Identities.
Good navigating has its rewards. If you are posting, be sure to state the question # you are replying to.
