CBSE Class 10 Answered
CIRCLE
Asked by akhileshnarayanan | 06 Feb, 2010, 09:49: PM
Expert Answer
PQ = 8 cm, PR = 4 cm, PO = 5 cm, then
ORP, OR = 3 cm .......Pythagorus's theorem,
tan 
POR = 4/3,
But in OPT, OPT = 90 ..............Radius perpendicular to the tangent at point of contact.
and POT = POR
tan POT = PT/OP = 4/3
PT = 4x5/3 = 20/3 = 6.67 cm
Regards,
Team,
TopperLearning.
Answered by | 07 Feb, 2010, 10:23: AM
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