Tuesday

October 21, 2014

October 21, 2014

Posted by **Lolo** on Tuesday, January 17, 2012 at 9:38am.

- Maths -
**Steve**, Tuesday, January 17, 2012 at 3:18pmIf the base of the ladder is at distance b from the wall, and the ladder makes an angle θ with the ground,

b/6 = cosθ

sec 60° = .5

sec 70° = .34

so 6*2 = 3

6*.34 = 2.04

so, the base may safely be between 2 and 3 feet from the wall.

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