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Mathematics 15 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

PB is a tangent, so it touches the circle at on place and it does so at a 90 degree angle to the radius at this point

jimthompson5910 (jim_thompson5910):

so that means PBO is a right angle (ie 90 degree angle)

jimthompson5910 (jim_thompson5910):

all of that other info is put in there to throw you off

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