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Mathematics 7 Online
OpenStudy (anonymous):

i suck at geometry.. sorry for a lll the questions. will medal/fan

OpenStudy (anonymous):

how kan i hewlp?

OpenStudy (anonymous):

point c is the center of the circle. if angle acb = \[1/2X+6\] and arc AB measures x+1 find x

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

sorry can help here... lol

ganeshie8 (ganeshie8):

angle acb = ?

OpenStudy (anonymous):

1/2x+6

ganeshie8 (ganeshie8):

im not sure if you mean 1/2x + 6 or 1/2(x+6)

OpenStudy (anonymous):

(1/2x)+6

ganeshie8 (ganeshie8):

okay :) simply use below property : central angle = arc measure

OpenStudy (mayankdevnani):

but what about radius ?

OpenStudy (anonymous):

so (1/2x)+6=x+1 ?

ganeshie8 (ganeshie8):

yes solve x

OpenStudy (anonymous):

so x=10?

ganeshie8 (ganeshie8):

we're not working arc length, so radius is not needed here

ganeshie8 (ganeshie8):

yes x=10 is right!

OpenStudy (mayankdevnani):

but \[\large \bf \theta=\frac{l}{r}\]

OpenStudy (mayankdevnani):

why did you take unit radius @ganeshie8 ?

ganeshie8 (ganeshie8):

`arc length` and `arc measure` are two different things

OpenStudy (mayankdevnani):

oh !!... thank you !!

ganeshie8 (ganeshie8):

`arc measure` is same as cenrral angle where as `arc length` is the distance along circle..

OpenStudy (mayankdevnani):

oh !! thank you very much !

ganeshie8 (ganeshie8):

agree, they are confusing terms haha

OpenStudy (mayankdevnani):

yep !

OpenStudy (mayankdevnani):

anyway, thanks for your help !

ganeshie8 (ganeshie8):

np:)

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