Thursday, October 29, 2009

Taylor reflection #10

For the blog for week 10 I am posting late because I missed the entire week of notes so I figured I would wait and get help with the hellacious week I expected to follow. However what came this week was surprising. Everyone was having trouble with what was learned the week I was out so we spent the majority of this week reviewing. So far I think I understand the notes. By the time I have to post a blog again I will have a very definitive idea of how I am handling the trig things we have learned so far.
As of right now I definitely understand the trig chart
TRIGCHART
0° *sin 0= 0 *cos 0= 1 *tan 0= 0 *csc 0= undefined *sec 0= 1
*cot 0= undefined

30° * sin π/6= 1/2 *cos π/6= √3/2 *tan π/6= √3/3 *csc π/6= 2 *sec π /6= 2 √3/3
*cot π/6= √3
45° *sin π/4= √2/2 *cos π/4= √2/2 *tan π/4= 1 *csc π/4= √2 *sec π/4= √2
*cot π/4= 1
60° *sin π/3= √3/2 *cos π/3= 1/2 *tan π/3= √3 *csc π/3= 2 √3/3 *sec π/3= 2
*cot π/3= √3/2
90° *sin π/2= 1 * cos π/2= 0 *tan π/2= undefined *csc π/2= 1 *sec π/2= undefined *cot π/2= 0

I also discovered an easier way to memorize the chart
First you would have to set up the chart differently than it was given
It would have to look like this
Sin Cos Tan Csc Sec Cot
30
45
60
90
Just like a graph and then you fill in the parts for each
If you can memorize the sin column for the chart you can figure out the rest of the chart
Cos is just sin backwards
Tan is just sin/cos
Csc is just 1/sin
Etc. You just have to find the relations of each

And that’s all I’ve got so far
Im still trying to learn everything else

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