Answer:
B
Step-by-step explanation:
The secant- secant angle RPS is half the difference of the intercepted arcs, that is
40 = [tex]\frac{1}{2}[/tex] (QT - RS) = [tex]\frac{1}{2}[/tex] (140 - x) ← multiply both sides by 2 to clear the fraction
80 = 140 - x ( subtract 140 from both sides )
- 60 = - x ( multiply both sides by - 1 )
60 = x
That is arc PS = 60°
