pablobegins
From an h = 68 feet observation tower on the
coast, a Coast Guard oﬃcer sights a boat in
diﬃculty. The angle of depression of the boat
is θ = 1
◦
.



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pablobegins
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dw:1318804517622:dw

pablobegins
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How far (in feet) is the boat from the shoreline? assume that the boat is starting from the little circle in the bottom right corner

LagrangeSon678
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basically how far is the boat from the base of the shore:
tan(1) = d/68
68 * tan(1) = d
solve this to get distance = d

pablobegins
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so the answer is?

pablobegins
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I got 57.28996, is that right? what am I doing wrong?

LagrangeSon678
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i believe that is right

pablobegins
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it was wrong in my online hw

pablobegins
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is that in ft though?

LagrangeSon678
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maybe you are suppose to round or something

LagrangeSon678
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or try (68)/(tan(1))

pablobegins
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that worked, thank you

LagrangeSon678
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anytime my friend