R R\,R is the point on OP OP\,OP such that OR:RP=3:1OR:RP = 3:1OR:RP=3:1 S S\,S is the point on the line PQ PQ\,PQ such that PS:SQ=1:1PS:SQ = 1:1PS:SQ=1:1 The line OQ OQ\,OQ is extended to point T T\,T Given that RRR, S S\,S and T T\,T are on the same straight line
Find QT⃗\vec{QT}QT.