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Two ships leave a port at 9 a.m. One travels at a bearing of N 53°...

Two ships leave a port at 9 a.m. One travels at a bearing of N 53° W at 13 miles per hour, and the other travels at a bearing of S 67° W at s miles per hour.

(a) Use the Law of Cosines to write an equation that relates s and the distance d between the two ships at noon.

(b) Find the speed s that the second ship must travel so that the ships are 42 miles apart at noon. (Round your answer to two decimal places.) mi/h

Math   Precalculus   
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