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## Homework Statement

An ant positioned on the very edge of a Beatles record that is 14.80 cm in radius revolves through an angle of 70.0o as the disk turns. What is the ant's path length?What is the magnitude of the ant's displacement?

## Homework Equations

L=Rtheta## The Attempt at a Solution

i was able to find the path length to 0.181 m and thats right but i cant find the displacement which seems like it should be easy...i used c^2=a^2+b^2 but that didnt work then i used costheta that didnt work so i used s=rtheta and that didnt work so .....please help, thanks