[填空题]
Cabin boy Jim is at the top of a cliff on Tortukos9uwlc+8y.bagrx-9 bh) etl d hs0ez.( /3lga Island, standid7t(jpxvlue- (2w w 6ing 100 $\mathrm{~m} $ above the sea level, and observes two ships in the Caribbean sea. The Black Pearl $(\mathrm{P})$ is at an angle of depression of $25^{\circ} $ and the Hispaniola $(\mathrm{H}) $ is at an angle of depression of $50^{\circ} $.
The following three dimensional diagram shows the foot of the cliff at $\mathrm{O}$ , Jim at $\mathrm{J}$ , two ships at $\mathrm{P}$ and $\mathrm{H}$ , and the angle $\mathrm{POH}=75^{\circ}$ .
Find the distance between the two ships, giving your answer correct to 3 significant figures. PH = m
