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Emily778
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AO=12 and BC=25. What is AB?
I think it's 37, but I'm not sure.
 one year ago
 one year ago
Emily778 Group Title
AO=12 and BC=25. What is AB? I think it's 37, but I'm not sure.
 one year ago
 one year ago

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whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
Close...
 one year ago

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
What is the length of the hypotenuse (OB)?
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
dw:1369717643930:dw
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
\(OC = OA = 12\) because they are the radii of the same circle.
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Also, as whpalmer asked, what is the hypotenuse, or \(OB\)? A good start might be noticing that \(OB = OC + CB\).
 one year ago

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
or, just tell us how you came up with 37...then we can see if it is a simple arithmetic error, or how you approached the problem, or whatever...
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
OB^2=OA^2+AB^2 if angle A = 90 37^2=12^2+AB^2 other wise you have the sine angle formula
 one year ago

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
I assumed (and ParthKohli too, I'm sure) that because only one intersection point is shown, AB is tangent to the circle, which means that OAB is a right angle.
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
imagine A approaching C
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
Not enough information given without assumption angle A = pi/2
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
When you assume you make a retriceof u and me
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
retriceof u and me
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
I guess it doesn't like that word
 one year ago

Emily778 Group TitleBest ResponseYou've already chosen the best response.0
That didn't help at all. You never even told me how to get that answer....
 one year ago

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
you also didn't tell us how you got your answer...
 one year ago

Emily778 Group TitleBest ResponseYou've already chosen the best response.0
adding them...Duh..
 one year ago

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
adding what, exactly, duh?
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
Solve 37^2=12^2+AB^2
 one year ago

Emily778 Group TitleBest ResponseYou've already chosen the best response.0
The numbers..DUH
 one year ago

Emily778 Group TitleBest ResponseYou've already chosen the best response.0
And uh...I need to know AB to do that. DUH!!
 one year ago

Kapt_Crazy Group TitleBest ResponseYou've already chosen the best response.1
emily the ans for ab is 35. its a right angle triangle
 one year ago

qweqwe123123123123111 Group TitleBest ResponseYou've already chosen the best response.0
Now wait...you're going "duh" at everyone else and yet you can't figure out what AB is from the equation 37^2=12^2+AB^2 ???
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
I used the Pythagorean theorem a^2+b^2=h^2 h = sqrt(a^2+b^2) or in out case b=sqrt(h^2a^2)
 one year ago

Emily778 Group TitleBest ResponseYou've already chosen the best response.0
@Kapt_Crazy So I was right? The answer is 35? :)
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
Generally you shouldn't just give quantity but show all work so it's easy checked or to show how it's done
 one year ago

Kapt_Crazy Group TitleBest ResponseYou've already chosen the best response.1
yeah u right :)
 one year ago

qweqwe123123123123111 Group TitleBest ResponseYou've already chosen the best response.0
No, you didn't say 35. You said "I think it's 37" which you absurdly arrived at by adding AO and BC together. Also, 35 is only correct if AB is tangent to the circle at A. But since that information isn't given, then its only an assumption.
 one year ago

Kapt_Crazy Group TitleBest ResponseYou've already chosen the best response.1
qweqwe if it was not a right angle triangle they would give u more info, like one of the angles or sumthing
 one year ago

Emily778 Group TitleBest ResponseYou've already chosen the best response.0
Oh, thankyou for going back and checking if I said 35. :) @qweqwe123123123123111
 one year ago

KenLJW Group TitleBest ResponseYou've already chosen the best response.0
Yes they would have to give 2 angles to solve
 one year ago

qweqwe123123123123111 Group TitleBest ResponseYou've already chosen the best response.0
The assumption is probably a safe one, @Kapt_Crazy, But UNLESS THAT INFO IS GIVEN EXPLICITLY, it's still just an assumption. And the number of poorly formed and incomplete problems that are posted here every single day are legion, so there's no good reason to assume that this problem is stated any better than any other.
 one year ago
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