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A ladder rests against a wall at an angles α to the horizontal. Its foot is pulled away from the wall through a distance ′p′, so that it slides a distance ′q′ down the wall making an angle β with the horizontal. Show that ab=cos α−cos βsin β−sin α |
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Answer» A ladder rests against a wall at an angles α to the horizontal. Its foot is pulled away from the wall through a distance ′p′, so that it slides a distance ′q′ down the wall making an angle β with the horizontal. Show that ab=cos α−cos βsin β−sin α |
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