kmeds16
Circles A and B have radii 5 and 7 respectively, and the distance between their centers A and B is 5. If the two circles intersect at points M and N, MN = a sqrtof 6. What is a+b?
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kmeds16
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I can draw it or visualize, but then i got stucked up in the diagonals thingy, in which I know there is a way in finding it.. i just want an assistance. Please helpppp
shrutipande9
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can i ask u 1 thing...wat is exactly a and b?
Jack1
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@kmeds16 can u upload a pic of the problem?
kmeds16
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@shrutipande9 the measure of MN is
kmeds16
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@shrutipande9 is a square root of b. and if u add and b, it will result to 10
shrutipande9
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MN is sqr rt of b or 6?
kmeds16
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a sqrt of b = MN
a + b = 10
the distance between the centers: 6
shrutipande9
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ohhh..now i get it...wait
kmeds16
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@shrutipande9 i drew it and will attach the file. from the way i understood it
kmeds16
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@shrutipande9 i understood it like this (file). Red line = MN. Green line = 6.
kmeds16
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@shrutipande9 so it will result looking like a kite right? in which we have 6 as diagonal1 and the diagonal2 is missing. I am confused on how to find the other diagonal, there is a propery of something for this
shrutipande9
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ya u r right wid d diag...i m just tryin 2 remember d formula....:P
kmeds16
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as what i can remember also, are of the kite = d1d2 divide by 2
shrutipande9
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but for this to be a kite the diagonals need 2 be perpendicular bisectors....and we cannot just deduce it from that...
kmeds16
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it is perpendicular =))
shrutipande9
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its given?
kmeds16
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it is really perpendicular XD from what we can see, because of theintersection of the two circles
shrutipande9
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no..we cannot deduce it just by seeing...wait ill get u a better helper...:P
@divu.mkr
kmeds16
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@shrutipande9 ahhh ye right i get it, so, how can we get the other diagonal?? i have the answer here, it is 10
kmeds16
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a plus be is 10
divu.mkr
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well they are perpendicular...you need not to derive it just remember it
divu.mkr
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familiar with trigo?
kmeds16
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yeah
kmeds16
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@divu.mkr YEAHHHH =)))
divu.mkr
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|dw:1390642954599:dw|
kmeds16
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@divu.mkr hey
divu.mkr
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yep
divu.mkr
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??
kmeds16
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@divu.mkr |dw:1390642954599:dw|?? =))
divu.mkr
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its looking perfect in my browser... :D
divu.mkr
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lemme get a snap of it
kmeds16
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huhu it doesnt on mine :*(
kmeds16
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i can only see |dw:1390642954599:dw| huhuhuhuhu
divu.mkr
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divu.mkr
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is it ok now?
kmeds16
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i can see it now
kmeds16
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@divu.mkr i have a question
divu.mkr
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yep..ask
kmeds16
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how can you find the other diagonal, given diagonal 1 and all the sides??
eliassaab
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Am I missing something?
Is the attached graph accurate?
kmeds16
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ya it is, wait, i will attach something regarding to my question
eliassaab
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So MN=10
kmeds16
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I understood inside details (i removed the circle) like this:
@eliassaab. i know that it has something to do with kites and diagonals and properties and etc etc but i am rly confused.
kmeds16
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@eliassaab i have to find MN, the red line. The answer is in the form of MN = a sqrtof b and a + b = 10
kmeds16
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blue line = 6
kmeds16
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@eliassaab heyyy =)))
eliassaab
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What is the relation between your original question and this graph?
kmeds16
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@eliassaab from this
eliassaab
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But the distance between the centers of the two circles is not 5. Your original question is not 100% correct. This one is different.
kmeds16
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@eliassaab oh my god i am so sorry,the original is 6. i am very sorry
kmeds16
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Circles A and B have radii 5 and 7 respectively, and the distance between their centers A and B is 6. If the two circles intersect at points M and N, MN = a sqrtof b. What is a+b?
ORIGINAL QUESTION.
@eliassaab sorry! hahaha
kmeds16
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@eliassaab heyyy =)))
eliassaab
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I will do it for you after lunch.
kmeds16
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@eliassaab ahm okay =)) I will wait for your reply! :D i will really do :)
eliassaab
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Here is a quick solution
kmeds16
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@eliassaab ahh! Ok i get it! Thank you!! :)
eliassaab
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NP