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busra09
31.07.2019 •
Mathematics
:( a person is watching a boat from the top of a lighthouse. the boat is approaching the lighthouse directly. when first noticed, the angle of depression to the boat is 17°31'. when the boat stops, the angle of depression is 46°41'. the lighthouse is 200 feet tall. how far did the boat travel from when it was first noticed until it stopped? round your answer to the hundredths place.
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Ответ:
.. tan(angle of depression) = (lighthouse height)/(boat distance)
Then the distance to the boat is
.. boat distance = (lighthouse height)/tan(angle of depression)
We want to find the difference between two distances, so
.. boat travel = (lighthouse height)*(1/tan(first angle) -1/(tan(second angle))
.. = (200 ft)*(1/tan(17°31') -1/tan(46°41'))
.. ≈ 445.10 ft
Ответ:
Option A is correct.
Step-by-step explanation:
Given scenario is - Shawna lives in Alaska and makes $66,500 a year and the median annual income is $68,460 in Alaska.
So, Yes, Shawna is likely to qualify for chapter 7 bankruptcy because her yearly income is below the median annual income of Alaska.
A person qualifies for chapter 7 bankruptcy if his annual income is below the median annual income of his state. So, as per the definition, option A is true.