Question 15A ladder against a vertical wall at an inclination α to the horizontal. Its foot is pulled away from the wall through a distance p, so that is upper end slides a distance q down the wall and then the ladder makes an angle β to the horizontal. Show that pq=cos β−cos αsin α−sin β

Question 15A ladder against a vertical wall at an inclination α to t

1.	Question 15A ladder against a vertical wall at an inclination α to the horizontal. Its foot is pulled away from the wall through a distance p, so that is upper end slides a distance q down the wall and then the ladder makes an angle β to the horizontal. Show that pq=cos β−cos αsin α−sin β
Answer» Question 15 A ladder against a vertical wall at an inclination $α$ to the horizontal. Its foot is pulled away from the wall through a distance p, so that is upper end slides a distance q down the wall and then the ladder makes an angle $β$ to the horizontal. Show that $\frac{p}{q} = \frac{c o s β - c o s α}{s i n α - s i n β}$

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Question 15A ladder against a vertical wall at an inclination α to the horizontal. Its foot is pulled away from the wall through a distance p, so that is upper end slides a distance q down the wall and then the ladder makes an angle β to the horizontal. Show that pq=cos β−cos αsin α−sin β

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