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Monday, May 3, 2010

"Jojo do you ever actually use this stuff???"

Sadly my answer to this was "IDK?!?!?! Charles do I look like a genius?!?!?!"

And so to my dismay I went on a search for a way to relate to this funky thing called TRIGONOMETRY and surprisingly we do actually you use this stuff. Apparently we use the Law of Sines and The Law of Cosines to measure and decide the height of mountains......

Land surveying makes an extensive use of the sine and cosine law. The idea is to subdivide the land into many triangles and to measure one side and two angels of each triangle. With the sine law the other two sides can be computed. The Mount Everest was found by this method to be the highest mountain on planet earth. http://maps.unomaha.edu/Peterson/funda/Pictures/SouthAsiaPeripheral/Peripheral_South_Asia_files/image005.jpg

Sunday, May 2, 2010

Useful Video

Hey y'all!
I found this nifty video, it will help you get a solid basic understanding as it goes over the unit circle and the SOH CAH TOA principle.
http://www.5min.com/Video/Learn-about-Unit-Circle-Definition-of-Trig-Functions-99315197
Hope it helps you too,
Camille

Free Math Help

As I was surfing the web, trying to find useful websites on trig to help myself and everyone else in the class I found this site: http://www.freemathhelp.com/trigonometry-help.html

This page actually links to a site with many of the videos which Jojo uses in class. I don't think everything linked from that site is free, but everything on the site which I linked is free.

I watched a video as I was going through that website that included a quote that I thought was quite good "never mistake activity for achievement."
When you're studying, make sure that you are doing so effectively.
Good luck to you all!

-Luke

Helpful Website

This website helped me a lot. The top half is for Trig and the bottom half is for Logarithmic functions so don't worry about that part.

http://www.math.hmc.edu/calculus/tutorials/reviewtriglogexp/

Saturday, May 1, 2010

Fundamental Identities of Trig

This is also really good for a little refresher: http://library.thinkquest.org/C004647/to/trig/identity.html


The identities here are all ones that we will have to know, and there are more that we will have to know, as well.

Wikipedia

Wikipedia is a great resource, it actually has alot of math on it.
Here's three links that could help you:
Law of sines - http://en.wikipedia.org/wiki/Law_of_sines
Law of cosines -http://en.wikipedia.org/wiki/Law_of_cosines
List of trigonometric identities- http://en.wikipedia.org/wiki/List_of_trigonometric_identities
*The list of trig identities includes things that we have not learned. So if you see something and you have no idead what it means, doesn't even look familiar, don't get alarmed... Because we haven't covered it.

These are only three links, there are several more from everything that we have learned that I encourage you to go and check out.