$1.)$ The initial void ratio is $1\mathrm{.}1$ and the final is $0\mathrm{.}7.$ The initial stress is $0\mathrm{.}5$ tsf and the final is $4\mathrm{.}2$ tsf$.$ The maximum past pressure is $76$ tsf$.$ What is the recompression index?

b$.)$ For two points, the normal stress is measured as $1\mathrm{.}9$ tsf and $2\mathrm{.}6$ tsf$.$ The shear strength for these two points is $1\mathrm{.}00$ and $2\mathrm{.}26$ tsf$.$ What is the corresponding friction angle in degrees?