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April 6th, 2018, 06:45 PM   #1
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What is the full form of LDCT and LTCT in cyclic quadrilateral?

L.D.C.T = $\sqrt {d^2 - (R-r^2)}$

L.T.C.T = $\sqrt {d^2 - (R+r^2)}$

What is the full form of LDCT and LTCT in cyclic quadrilateral?

Last edited by Ganesh Ujwal; April 6th, 2018 at 06:52 PM.
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April 7th, 2018, 06:35 AM   #2
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Can you provide a diagram?
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April 7th, 2018, 12:57 PM   #3
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Enlighten us. What do LDCT and LTCT mean?
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April 7th, 2018, 06:03 PM   #4
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Length of direct common tangent and length of transverse common tangent.
I got it.

Last edited by skipjack; April 8th, 2018 at 05:14 AM.
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April 8th, 2018, 05:12 AM   #5
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Perhaps you intended LDCT = $\sqrt{d^2 - (R - r)^2}$ and LTCT = $\sqrt{d^2 - (R + r)^2}$, as given and proved in this article. However, I don't understand your reference to a cyclic quadrilateral, or what you meant by "full form".
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