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Mathematics 10 Online
OpenStudy (anonymous):

A ladder leans against a house at a 60° angle to the ground. If the ladder extends to a length of 158 inches, what is the height of the house rounded to the nearest hundredth of an inch? Type the numeric answer only in the box below.

OpenStudy (anonymous):

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

|dw:1346198648780:dw|

jimthompson5910 (jim_thompson5910):

solve sin(60) = x/158 for x

OpenStudy (anonymous):

so 158 divided by 60

OpenStudy (anonymous):

no

OpenStudy (anonymous):

:/

OpenStudy (anonymous):

first find sin(60)

OpenStudy (anonymous):

0.86602540378444

jimthompson5910 (jim_thompson5910):

so sin(60) = x/158 becomes 0.86602540378444 = x/158

OpenStudy (anonymous):

ok so the answer is 158?

jimthompson5910 (jim_thompson5910):

no, multiply both sides by 158 to isolate x

OpenStudy (anonymous):

0.00548117344167367089

jimthompson5910 (jim_thompson5910):

you divided, but should have multiplied

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

136.83201379794152????

jimthompson5910 (jim_thompson5910):

that is correct

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