The arcs given by the circle,are .
Given that
First determine
(Apply arc addition theorem)
(Substitute
)
(PQ = RQ)
(Add:
)
(Subtract 120 from each side)
(Simplify)
(Divide each side by 2)
(Simplify)
(Divide:
)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
(Substitute
)
(Simplify)
The values are ,
.