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OpenStudy (anonymous):

Calculus Rates & speed question about airplanes

OpenStudy (anonymous):

I know the answer of a; how do I find the equation for the distance between the planes at all times for part b?

OpenStudy (anonymous):

OpenStudy (amistre64):

its easier to read when its not in the chinese mode ...

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

Is it solvable?

OpenStudy (amistre64):

its solveble, buti have to read thru it first, and these old eyes get tired at times

OpenStudy (amistre64):

both at 33000 ft they intersect directly over Frada hgts near misses shortly after 130pm --------------------------------------- at 130, Am2003 was 32 Nm from Frada, heading 171o at a rate of 405knots at 130 Un366 was 44 Nm from Frada, heading 81o at a rate of 465 knots

OpenStudy (amistre64):

how how do we read airplane headings? from the north line right?

OpenStudy (anonymous):

yes

OpenStudy (amistre64):

doesnt really matter, the orientation is the same regardless of our 'proper' placements

OpenStudy (amistre64):

lets draw a picture, both planes, and Frada

OpenStudy (anonymous):

Ohh ok I just assumed it was a right triangle and so drew a right triangle with 81 9 and 90

OpenStudy (amistre64):

171-81 = 90, so your assumption was valid

OpenStudy (anonymous):

we have that, we got the rate of the distance decreasing between them two, but we need to find the actual distance separation at the closest point. that is the part we are having trouble with

OpenStudy (amistre64):

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OpenStudy (anonymous):

the rate we got is 472.8 knots

OpenStudy (anonymous):

yup we have that already

OpenStudy (amistre64):

d^2 = x^2 + y^2 rate of change is derivatives, so what is our derivative?

OpenStudy (amistre64):

jut making sure we are on the same page here

OpenStudy (amistre64):

the shortest distance between them is when one of them is at Frada ... that is when they are in line with each other.

OpenStudy (amistre64):

what is our derivative? lets make sure we are working it thru and have not developed any errors

OpenStudy (anonymous):

hmm..how did you draw the triangle?

OpenStudy (perl):

|dw:1433453806233:dw|

OpenStudy (anonymous):

yup we have that

OpenStudy (perl):

|dw:1433453888308:dw|

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