x represents the length of a ladder leaning up against a wall of a building, and y represents the length from the base of the wall to the bottom of the ladder. The ladder makes a 60 degree angle with the ground and reaches a point on the wall 17 feet above the ground. Find the number of feet in x and y. Round to the nearest tenth of a foot.
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Expert's answer
2012-12-11T09:19:50-0500
Here is the expression that relates x, y and α (angle the ladder makes with the ground):
tg(α) = y/x (1)
As the ladder reaches a point on the wall 17 feet above the ground, then obviously x = 17[ft]. Therefore,
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