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4In fig O is the centre of acircle, chord PQ chord RSIf LPOR 70°and (arc RS)-80°, find1) m(arc PR) 2) m(arc QS)3) m(arc QSR) |
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Answer» 1). Chord PQ = RS so m(arc PQ) = m( arc RS) = 80 degree.2). m (arc QS) = 360- 80-80-70 = 130.3). m (arc QSR) = 130 + 80 = 210. |
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