​ Am I right?

First one....we need to calculate minor arc WY.....

This is  360 - (86 + 156)  =  118°

Angle WXY intercepts this arc ...so...it measures (1/2)(118)  =  59°

Second one

You have calculated arc RT  correctly !!!!

But we need arc RS

This =   360 - arc RS - arc TS  =    

360 - 84 - 171  =

105°