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Mathematics 11 Online
OpenStudy (anonymous):

A ladder of length x cm is inclined at an angle a to the ground. The foot of the ladder is fixed. If the ladder were y cm longer, the inclination to the horizontal would be b. Show that the distance from the foot of the ladder to the wall is given by ycosacosb / cosa-cosb cm. Any help would be greatly appreciated!

OpenStudy (jack1):

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