Take test Rolando Gonzalez-Monila Fielom MAC1147.002s17 Precalculus/Tngonometry

Question

Take test Rolando Gonzalez-Monila Fielom MAC1147.002s17 Precalculus/Tngonometry R 221N12503 PM Quiz: Quiz 6.1 Time Remaining: 00 4953 Sutrit Quiz This Question: 1 pt This Quiz: 9 pts possible 7 9 (6 compiete A 20-foot ladder resting against a wall of a buldngin such a way that the top of the ladder is 13 fet above the gourd. How tar is the foot ofthe laddertomthe base Thetoot ofthe ladder is approximately tom the base of the bulding (Round to the nearest foot as needed answer inthe answer Your remaining session duration Place the mouse pointer over the dod

Explanation / Answer

distance from wall to the foot of ladder be x
The distance from top of ladder to the ground=13 feet
Ladder length = 20 feet
The ground wall and ladder form a right triangle
apply Pythagoras theorem

x^2+(13)^2=20^2
x^2+169=400
x^2-400+169=0
x^2-231=0
therefore x=15.19868

distance from wall to the foot of ladder 15.19868 feet

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