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PQ and PR are the two tangent of the circle with centre O.If the length of QR is 8 cm and the radius of the circle(i.e. QO) is 5 cm. Find the value of QP.WITH STEP BY STEP EXPLANATION.... PLAEASE ASAP....NEED URGENTLY |
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Answer» LENGTHS of the tangents DRAWN from an external point to a circle are equal. ∴QP=PT=3.8cm PR=PT=3.8cm From EQUATIONS (i) and (ii) QP=PR=3.8cm But, QR=QP+PR ∴QR=3.8+3.8 QR=7.6cm Step-by-step EXPLANATION: Lengths of the tangents drawn from an external point to a circle are equal. ∴QP=PT=3.8cm PR=PT=3.8cm From equations (i) and (ii): QP=PR=3.8cm But, QR=QP+PR ∴QR=3.8+3.8 QR=7.6cm |
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