Saturday, June 13, 2009

Item 139: Hengky's Ladder

Hengky wants to buy a ladder to do some odd jobs around his house, Before buying one, Hengky wants to do some equations to figure out how long a ladder needs to be to reach certain parts of his house, while negotiating obstacles like fences.

There is a fence that runs parralel to the house, and the ladder must be grounded on the far side of it.

The Fence is 1.2 metres high, and 1 metre from the house.

The ladder must be able to sit under the eaves of the house.

The ladder must be placed between 45 & 70 degrees to the ground, for safety.



With this data, please find the minimum possible ladder length that fits the constraints.

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