please help

As follows:

SP = PQ = 2        ST = 1        ∠SPT = ∠TPU 

tan(∠SPT) = ST / SP = 26.56505118°

∠SPT + ∠TPU =  ∠SPU = 53.13010235°

∠UPQ = 90° - ∠SPU = 36.86989765°

UQ = tan(UPQ) * PQ = 1.5

UR = RQ - UQ = 0.5