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[" 12.PQR is a triangular park with "PQ=PR=200m" ."],[" A T.V.tower stands at the mid-point of QR.If the "],[" angles of elevation of the top of the tower at "P,Q],[" and "R" are respectively "45^(@),30^(@)" and "30^(@)" ,then the "],[" height of the tower (in "m)" is- (JEE-MAINS-2018) "],[[" (1) "50," (2) "100sqrt(3)," (3) "50sqrt(2)," (4) "100]]

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PQR is a triangular park with PQ=PR=200m . A T.V tower stands at the mid-point of QR.If the angles of elevation of the top of the tower at P,Q and R respectively 45^(@),30^(@) and 30^(@) then the height of the tower in m is

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