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Mathematics 14 Online
OpenStudy (calculusxy):

Need your honest opinion on this project. Please check it aligned with the rubric. I will appreciate it! MEDAL will be given!!!

OpenStudy (calculusxy):

OpenStudy (calculusxy):

The `math.pdf` file is where my project is and `class3levelrubric.pdf` is the rubric. Please check under the Communications column and see if it matched up with the expert area.

OpenStudy (calculusxy):

@freckles @mathstudent55

OpenStudy (calculusxy):

*sorry meant to say `classic3levelrubric.pdf`

OpenStudy (amitrashok):

jimmy can u help me

OpenStudy (jimmykim):

M still reviewing it and it looks really good so far

OpenStudy (amitrashok):

sorry to interupt but its supper important ill medal

OpenStudy (jimmykim):

What

OpenStudy (amitrashok):

ill also sponcer u to my dads builsness

OpenStudy (amitrashok):

if your good

OpenStudy (jimmykim):

Fine

OpenStudy (jimmykim):

Hit me

OpenStudy (calculusxy):

@jimmykim How is it?

OpenStudy (jimmykim):

It looks really good

OpenStudy (calculusxy):

Are all of the work and explanation sufficient and correct?

OpenStudy (jimmykim):

Im still looking at it though

OpenStudy (amitrashok):

Jimmy its urgent please

OpenStudy (amitrashok):

i just tagged u

OpenStudy (amitrashok):

@jimmykim u there

OpenStudy (jimmykim):

yeah

OpenStudy (amitrashok):

@rebeccaxhawaii can u help too

OpenStudy (amitrashok):

i really need help

OpenStudy (jimmykim):

@calculusxy It looks real good, all your formulas and explanations are well written and pronounce

OpenStudy (jimmykim):

@amitrashok

OpenStudy (amitrashok):

yah

OpenStudy (calculusxy):

Thanks @jimmykim

OpenStudy (jimmykim):

No Problem

OpenStudy (calculusxy):

@phi

OpenStudy (calculusxy):

@freckles

OpenStudy (calculusxy):

@mathmale

OpenStudy (calculusxy):

@phi How is it?

OpenStudy (phi):

In the second problem you have a statement "remember that instead of sin theta = opp/ hyp we need to have sin^-1 = opp / hyp" you should change the last part to we will use \( \theta= \sin^{-1} \frac{app}{adj} \)

OpenStudy (calculusxy):

I don't understand.

OpenStudy (phi):

Overall it's very good, but the explanation is wordy and thus hard to follow in places. But writing clearly about math is very hard. (As you know, reading it is bad enough)

OpenStudy (calculusxy):

Do you think that I will get a 3 out of 3 on this? (According to the rubric)

OpenStudy (calculusxy):

And another question. Do you mean to say \(\theta = sin^{-1} = \frac{opp}{hyp}\)

OpenStudy (phi):

this part should be redone

OpenStudy (calculusxy):

So can I say "we will be using \(\theta = sin^{-1}(\frac{opposite}{hypotenuse})\) "

OpenStudy (phi):

yes. notice that is different from what you have now. also, a little further up you say figure out if its sin,cos,tan and then make sure it has a negative one on top an expert would not write it that way. I would explain it the way you do, but leave that part out, and get the relation sin theta = 250/2000 = 0.125 then I would say, apply the inverse sin operator to both sides to get theta = sin^-1 (0.125) and explain that the inverse sine returns an angle whose sign is 0.125

OpenStudy (calculusxy):

what do you mean by "who sign is 0.125"?

OpenStudy (phi):

who's sine is 0.125

OpenStudy (calculusxy):

okay. can you hang on for like 5 minutes as I revise it? then can you check it again and see if it's alright please?

OpenStudy (calculusxy):

another question. what do you mean when saying " I would explain it the way you do, but leave that part out"?

OpenStudy (phi):

I meant explain how to use soh cah toa to choose the correct trig function sin A = opp/hyp then show "substituting in the know values" and simplifying sin A = 250/2000 sin A = 0.125 now you explain to solve for the angle A, use the inverse sin function A = sin^-1 (0.125) btw, in case you did not know the inverse sine "undoes" the sin in other words \[ \sin^{-1}\left( \sin A \right) = A \] so we "apply" the inverse sin to both sides: \[ \sin A = 0.125 \\\sin^{-1}\left( \sin A \right) = \sin^{-1}0.125 \\ A= \sin^{-1}0.125 \\ A= 7.2º\]

OpenStudy (calculusxy):

okay thanks for clarifying it!

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