Question

A)6
B)10
C)45
D)85
Someone help me and give me a example how you got the answer too please !!

Answer 1

Since both chords are congruent,
arc WX = arc YZ
∠ WX = ∠ YZ

∴ 3p + 55° = 7p + 15°
4p = 40°
p = 10°

YZ = 7p + 15°
YZ = 7(10°) + 15°
YZ = 85°

Answer is D.