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Mathematics 7 Online
OpenStudy (anonymous):

If the arc length shown is 15 feet, find theta to the nearest hundredth of a degree

OpenStudy (anonymous):

OpenStudy (anonymous):

@jigglypuff314

OpenStudy (anonymous):

pi radians

OpenStudy (jdoe0001):

\(\bf arc=s=r\theta\implies \cfrac{s}{r}=\theta\)

OpenStudy (jdoe0001):

or in case you want it in degrees, then \(\bf arc =s =\cfrac{\theta r\pi}{180}\implies \cfrac{180s}{r\pi}=\theta\)

OpenStudy (anonymous):

@jigglypuff314 can you helP?

jigglypuff314 (jigglypuff314):

jdoe's got this, he's better than I am at this stuff

OpenStudy (anonymous):

I don't get it though, what do I do with his equation

OpenStudy (anonymous):

@jdoe0001 can you keep explaining?

OpenStudy (jdoe0001):

hmmm well, r = radius s = arc just plug things in to get the angle

OpenStudy (anonymous):

15 is the arc, but idk the radius

OpenStudy (jdoe0001):

look at the picture, the radius is right there To see what is in front of one's nose needs a constant struggle. ~~ George Orwell, "In Front of Your Nose" ~~

OpenStudy (anonymous):

I don't know the the radius value is though

jigglypuff314 (jigglypuff314):

|dw:1393793679669:dw|

OpenStudy (anonymous):

6 is the radius?

jigglypuff314 (jigglypuff314):

yep

OpenStudy (jdoe0001):

|dw:1393794334201:dw|

OpenStudy (anonymous):

450/pi?

jigglypuff314 (jigglypuff314):

yeah and actually divide it by pi because the problem wants you to round to the nearest hundredth :)

OpenStudy (anonymous):

so 143 is the answer!!!??

jigglypuff314 (jigglypuff314):

round to hundredth 123.45 ^ hundredth

OpenStudy (anonymous):

143.24 you mean?

OpenStudy (anonymous):

??

OpenStudy (anonymous):

@jdoe0001

jigglypuff314 (jigglypuff314):

yeah 143.24 degrees is what I got :)

OpenStudy (anonymous):

Thanks!

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