geometry
posted by Anonymous .
The diameter of circle C is 18 cm. is 60°. Use this information, the diagram, and your experiences in geometry this semester to answer these questions. (Use .)
a) Find . Explain.
b) Find . Explain.
c) Find . Explain.
d) Find the length L of . Show your work.

What is 60º? We don't have the diagram to help you.