Needle on parallel lines, problem

Hi, I was given a problem by the professor, and I feel like I do not know where to begin. Well, here is the problem:
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Endless, parallel East-to-West lines are spaced 2 inches apart on the ground, and a needle of length 1 inch is randomly tossed on the ground.
Compute the probability that the needle touches a line.
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I have tried attempting it, but I really don't have anywhere to start. Would anyone perhaps nudge me in the right direction? Thanks in advance.

-Mark

This is a classical problem with a very interesting solution. There's a couple ways of doing it. Think about circles that spinning the needle generates...

HallsofIvy