A (vertical) fence 2.3 m high is located 1.2 m away from the (vertical) wall of a building. In this question, we shall take steps to find the shortest ladder that can reach the wall from the ground outside the fence.
(a) The two ends of the ladder are touching respectively the wall and the ground. We may also assume that the ladder touches the top of the fence, for otherwise the ladder could not be the shortest. If the ladder makes an angle of x radians with the ground, 0

Mathematics
A (vertical) fence 2.3 m high is located 1.2 m away from the (vertical) wall of a building. In this question, we shall take steps to find the shortest ladder that can reach the wall from the ground outside the fence.
(a) The two ends of the ladder are touching respectively the wall and the ground. We may also assume that the ladder touches the top of the fence, for otherwise the ladder could not be the shortest. If the ladder makes an angle of x radians with the ground, 0

Mathematics
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