In the triangle $P Q R , P R = 2 , Q R = p$ and $\angle R P Q = 30 ^ { \circ }$. What is the set of all the values of $p$ for which this information uniquely determines the length of $P Q$ ?
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In the triangle $P Q R , P R = 2 , Q R = p$ and $\angle R P Q = 30 ^ { \circ }$.
What is the set of all the values of $p$ for which this information uniquely determines the length of $P Q$ ?