A helicopter makes a forced landing at sea. The last radio signal received at station C gives the bearing of the helicopter from C as at an N 56.9 ° E altitude of 427 feet. An observer at C sights the helicopter and gives 
as 12.8°. How far will a rescue boat at A have to travel to reach any survivors at B (see the figure)? Round your answer to the nearest ten feet.
?
?
?
?
A. 1,620 ft
B. 1,570 ft
C. 1,590 ft
D. 1,580 ft
E. 1,540 ft
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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