$1435.$ If the angles for an axial$-$flow turbine blade are $1=30$ degrees,$$$1=60$ degrees, and $2=30$ degrees, determine the velocity of the water entering and exiting the blades if the mean radius of the blades is $1\mathrm{.}5$ ft$.$ The turbine is rotating at $70$ rad$/$s$.$

I know that the answer is V$1=90\mathrm{.}9$ ft$/$s and V$2=52\mathrm{.}5$ ft$/$s$.$ Please show the process of completing this problem