Question

A 7-foot ladder is leaned against a building in such a way that the bottom of the ladder is 4 feet from the base of the wall. Find the angle formed between the ladder and the ground.

Answer 1

Using the cos:

cos (angle formed) = (Adjacent Side) / (Hypotenuse side)
Adjacent Side = Distance from ladder to wall = 4
Hypotenuse side = Length of ladder

The answer will be...

Answer 2

4/7 = What?

Answer 3

@pcarr114 ?

Answer 4

.5714285714

Answer 5

OK now, @dauspex Shouldn't he find cos .571?

Answer 6

I'm asking him because I might be wrong. :P

Answer 7

but you are going the right way. :)

Answer 8

One sec

Answer 9

cos (angle) = 4 / 7
(angle) = cosh (4/7)
* cosh = cos^-1