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shawncoffee
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CIRCLE PROBLEM - PLEASE HELP ME UNDERSTAND THE RULE 19 Sep 2014, 12:24
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I have attached two images. One is a problem and one is a rule. I am not able to understand why is it that I cannot apply the rule to this problem? or can I apply?

I know that the radius hits the tangent at the right angle and hence I can solve the problem with that rule.

But what im not able to understand is that - isnt UT a chord and angle O an angle in the alternate segment? Why cant I solve it with the rule (attached)

Please help



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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mikemcgarry
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CIRCLE PROBLEM - PLEASE HELP ME UNDERSTAND THE RULE 20 Sep 2014, 21:14
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shawncoffee
I have attached two images. One is a problem and one is a rule. I am not able to understand why is it that I cannot apply the rule to this problem? or can I apply?

I know that the radius hits the tangent at the right angle and hence I can solve the problem with that rule.

But what im not able to understand is that - isnt UT a chord and angle O an angle in the alternate segment? Why cant I solve it with the rule (attached)

Please help
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Dear shawncoffee,
I'm happy to respond. :-)

My friend, I know geometry inside-out, and they way these folks have phrased "Rule 5" seems pure gibberish to me. The wording of that rule is about as bad as I have ever seen any mathematical idea explained. On the basis of that alone, I would question the pedagogical value of that source.

Here's a blog with challenging circle problems, and includes links to blogs that cover everything you need to know about circles for the GMAT:
https://magoosh.com/gmat/2014/circle-pr ... -the-gmat/

Mike :-)



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!