A simple horizontal curve has the following coordinates:

PI: N $5162\mathrm{.}560\text{'},$ E $1527\mathrm{.}339\text{'}$

RP: N $5843\mathrm{.}514\text{'},$ E $730\mathrm{.}045\text{'}$

PC: N $4987\mathrm{.}560\text{'},$ E $1224\mathrm{.}230\text{'}$

PI at station $65+79\mathrm{.}76$

PT: N $5489\mathrm{.}313\text{'},$ E $1652\mathrm{.}768\text{'}$

$16.$ What is the station of the beginning of the curve?

$17.$ What is the degree of curvature?