Can someone please help me with my Geometry homework please?

Please use the following image below to solve the question:
Find the measure of the red arc or angle.
What is the measure/degree of PS?(The symbol is in the the image)

Please show all the work on how you got your answer.

Can someone please help me with my Geometry homework please Please use the following image below to solve the question Find the measure of the red arc or angle class=