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Prove that the length of two tangents drawn from an external point to a circle are equal |
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Answer» Given = QP and PR are the external tangentProve = QP = PRConstruction = joint OP , OR &OQproof = ?POQ & ?OPR OQ =OR (radii) OP =OP (common) angle Q = angle R (90) ?POQ congruant ?OPR (R.H.S) PQ = OR (C.P.C.T ) THEOREM 10.2 (very IMP) It\'s theorem 10.2 in ncert |
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