A wooden plank is leaning against a wall

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1.  A wooden plank is leaning against a wall. The bottom of the plank is 3 feet from the wall. Answer each of the following questions, and show all of your work.

a)  Find AC, the approximate length of the plank. Round to the nearest tenth of a foot.

b)  Find BC, the height off the ground where board touches the wall. Round to the nearest foot.

angle c is 49 degrees

angle B is 90 degrees

 
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