Question3. A tresuard at poettion L spots a swimmer lif troubic it one copner of the pool, S . She runs Bcen the lengen of the pool to poeltion P, and then dives in and swimt a distance d from P to S. a) Show thent the swiming distanco is siven by the relation $d=w \sec x . \quad[-/ 2 \mathrm{k} / \mathrm{U}]$ b) $I y=2 w$, determine the range of values that $x$ may take on given that $P$ can be anywhere along the length of the pool.
L $\qquad$ /3 APP1 c) Determine the range of values that $d$ may take on. $(1) 2 \mathrm{APP})$