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Mathematics, 23.04.2020 02:06 evazquez

A plane flying a straight course observes a mountain at a bearing of 30.3degrees to the right of its course. At that time the plane is 9 kilometers from the mountain. A short time later, the bearing to the mountain becomes 40.3degrees. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?

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