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katovenus [111]
3 years ago
5

An 18-foot ladder is leaning against a vertical brick wall. The base of the ladder is 9 feet away from the wall.

Mathematics
1 answer:
Triss [41]3 years ago
8 0
A^2 + b^2 = c^2
a^2 + 9^2 = 18^2
a^2 + 81 = 324
a^2 = 243
a = 15.589 = 15.6 feet is the angle the ladder is at :)
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