A carpenter leans an extension ladder against a house to reach the bottom of awi now 30 feet above the ground as shown in the diagram below the ladder makes a 70° angle with the ground to the nearest foot determine and state the length of the ladder?

1 Answer
Gió
Jul 27, 2018

I tried this:

Explanation:

I considered the following diagram (from what I understood of the question):
enter image source here
we can use trigonometry to evaluate the length of the blue ladder as:

#30=lsin(70^@)#

rearranging:

#l=30/(sin(70^@))=31.9~~32"ft"#

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