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Circles A and B are externally tangent.  Angle PAB is a right angle.  Segment PT is tangent to circle B at T.  If the radius of circle A is 1 cm and the radius of B circle is 4 cm, what is the length of segment PT in cm?

 

 Sep 24, 2021
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BP = sqrt(AB2 + AP2)

 

PT = sqrt(BP2 - BT2)

 Sep 25, 2021

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