Solve the problem.A plane flying a straight course observes a mountain at a bearing of 35.3° to the right of its course. At that time the plane is 
from the mountain. A short time later, the bearing to the mountain becomes 45.3°. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?
A. 5.7 km
B. 8.6 km
C. 3.8 km
D. 9.5 km
Answer: A
Mathematics
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Mathematics