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P.o.t.W. #28

■ No GDC ■ for SL and HL students The quadrilateral PQRS shown below is a trapezium where the parallel sides PQ and SR have lengths \(a and \(b respectively. The diagonal QS is shown as a dashed line segment. The two diagonals, QS and PR, are equal in length. \({\textrm{\theta }} is the angle between QS and SR. Find the length of QS in terms of \(a , \(b and \({\textrm{\theta }} . PDF: P.o.t.W. #28

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