Answered

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A 15-foot ladder is leaning against a 30-foot wall. The bottom end of the ladder is 9 feet from the wall. How many feet above the ground does the ladder touch the wall?

Can you help me break it down it's been a while please thanks.

Sagot :

the answer is 12 feet tall... look at pic
View image mrthurow
tadvisohil886
Applying Pythagoras theorum to the situation ;

[tex] \alpha ^2 + \beta ^2 = C^2 \\ \\ 9^2 + \beta ^2 = 15^2 \\ \\ 81 + \beta ^2 = 225 \\ \\ => \beta ^2 = 144 \\ \\ => \beta = 12 cm[/tex]

Thus, the answer is 12 ft.
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