Dhaka Secondary 2016 P7

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samiul_samin
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Dhaka Secondary 2016 P7

Unread post by samiul_samin » Mon Feb 18, 2019 2:05 pm

In triangle $POR$; $R=90^{\circ}$ , and$QR=21$. $T$ is a point on the side $PR$ such that. $S$and $Q$ are situated in opposite regions with respect to $PR$ in such a way so that $\angle{PST}=90^{\circ}$. If $PS = 20, ST = 15,$ find the length of $QS$.

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