In the diagram, angle u= 30 degrees. Arc XY is 170 degrees, and arc VW is 110 degrees. Find arc WY, in degrees.
i think both your questions have already been answered here: https://web2.0calc.com/questions/please-help-thank-you_18
Arc WY - Arc XV = Angle U = 30 degrees.
Arc WY + Arx XV = 360 - 170 - 110 = 80 degrees.
Therefore, arc WY = (30 + 80)/2 = 55 degrees.
This is the answer to question #1 from that link; the answer is not correct!!!