Guess whose back? Soh, Cah and Toa are! and they brought a few friends, named Cho, Sha and Cao! Now unless you slept through a whole unit of last year's math, you should know what soh cah toa is, basic trigonometry. If you have a right triangle with an angle of 21 degrees and a hypotenuse of 12cm, you can easily find the length of the side opposite to the angle.
But, enough of that baby stuff! Time to kick it up a notch. Going by the same principles as soh cah toa, you can probably guess what we do with cho sha cao.
Exact Same Thing! Of course, we have been introduced with some new words, so let's check those out.
c in cho = cosecant
s in sha = secant
c in cao = cotangent
Moving past the first letters in cho sha cao are the final two letters in each word and just like soh cah toa, these letters stand for
o = opposite
h = hypotenuse
a = adjacent
But Arnold, if these different terms stand for the same thing, what's the difference?
I can answer that question with one unnecessarily big word...
RECIPROCATION!
or the whirly bird as I call it.
Cosecant is the reciprocal of sine
Secant is the reciprocal of cosine
Cotangent is the reciprocal of tangent
And that is about as far as we got today! hope you enjoyed the blog! Glad to be the guinea pig for this daily class blog concept :)
See ya next time!
EXCELLENT post Arnold! Thanks for setting the bar so high! You used a diagram, good simple explanations, AND humour! I couldn't have done it better myself!
ReplyDeleteAwesome description! Reading things helps me understand faster than just listening so, if you don't mind, I'd like to copy this and stick in my binder to refer to. Easy lanquage and nothing that confused me.
ReplyDeletehey go ahead, i don't mind
ReplyDeleteRealllly great description! It was a little confusing in class just because I forgot the basics of Trig, but this really sums it up and makes things clear!
ReplyDeleteIn class I did not get it, I had forgotten trig, but now that its all layed out clearly it doesn't feel quite fo hard.
ReplyDeleteFantastic organization of thoughts and info! Color co-ordination and flow of ideas made it clear and easy to understand. It was excellent
ReplyDeleteVery good explanation, it really wasn't hard or boring to read. I like the examples and the different font sizes and colors you used. I actually enjoyed reading this!
ReplyDeleteSo there's not much more to say, I think everyone else has already summed up how awesome this summary was! :) Definitely a great idea for notes, and simple to put on a memory aid! Uber Helpful (:
ReplyDeleteI acutally had some difficulties with these but your blog helped me understand it more! thank you :P:)
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