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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Do not use Co-ordinate Geometry
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[Post New]3 Feb 2008 21:33:42 IST
    Subject: Do not use Co-ordinate Geometry
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jatinroxx (355)

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Two circles intersect each other in points A and B. A line PAQ cuts the two circles at points P and Q. The tangents at points P and Q intersect each other at point T. Prove that P, B, Q and T are concyclic points.
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[Post New]3 Feb 2008 21:55:25 IST
    Subject: Re:Do not use Co-ordinate Geometry
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jatinroxx (355)

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sm1....
 
Luks like everyone's in the lounge and busy in the fanfare of goiit....
 
Can sm1 not plz answer my question.?????
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[Post New]4 Feb 2008 20:22:34 IST
    Subject: Re:Do not use Co-ordinate Geometry
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jatinroxx (355)

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I c my doubts vanishing, looks like this place is now competing against orkut and facebuk.........
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[Post New]4 Feb 2008 20:30:40 IST
    Subject: Re:Do not use Co-ordinate Geometry
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nadeemoidu (1184)

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angle ABQ = angle AQT ( by theorem)               .........(1)

angle ABP = angle APT  ( "        "     )               ..........(2)

In triangle TPQ , angle T + angle P + angle Q = 180

=> angle ABQ + ABP  + angle T = 180

=> angle PBQ + angle T = 180. So they are concyclic
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[Post New]4 Feb 2008 20:41:34 IST
    Subject: Re:Do not use Co-ordinate Geometry
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foreversmilinganu (60)

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trying!!
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