What is the stretch of the spring holding a wedged board?

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Homework Statement


A 11.5 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 206 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.

Homework Equations



F=-kx

The Attempt at a Solution



I tried doing sin50(11.5kg)/-206 but that didn't work
 
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Can you post the drawing?
 
I tried but it didnt work. I'm not sure how to do it.
 
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