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lexiiiee
25.04.2020 •
Mathematics
It is 4.7 km from Lighthouse A to Port B. The bearing of the port from the lighthouse is N73°E. A ship has sailed due west from the port and its bearing from the
lighthouse is N31°E. How far has the ship sailed from the port? Round your answer to the nearest 0.1 km
O A. 3.5 km
O B. 3.1 km
O C. 3.7 km
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Ответ:
correct option is C. 3.7 km
Step-by-step explanation:
given data
A to Port B = 4.7 km
lighthouse = N73°E
lighthouse = N31°E
solution
we get here first
B and
here
and
sum of all angle 180° so
17° + 42° +
C = 180°
solve it we get
Now we use here sin law that is
put here value and we get
solve it we get
b = 3,7 km
so correct option is C. 3.7 km
Ответ:
396cm
Step-by-step explanation:
55 x 40 = 2,200
2,200 x 180 = 396,000
396,000 / 1000 = 396
396cm
(I don't know for sure).