Tom wants to reach a second floor window on a house that is 20 feet above ground. If he must put the ladder at a 70° angle to the ground, how long must the ladder be?

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asked Feb 27, 2018 12.8k views

3 votes

Tom wants to reach a second floor window on a house that is 20 feet above ground. If he must put the ladder at a 70° angle to the ground, how long must the ladder be?

Mathematics
high-school

Sumit Surana asked

by Sumit Surana

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1 Answer

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let the ladder length be L, then

sin 70 = 20/L, L = 20/sin70 = 21.3 feet
the length of ladder is 21.3 feet

Happygoat answered Mar 5, 2018

by Happygoat

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