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March 27, 2015

March 27, 2015

Posted by **nina** on Monday, January 6, 2014 at 7:43am.

- trigonometry -
**Damon**, Monday, January 6, 2014 at 8:39amangle at ship B

(sin 25)/20 = (sin A)/4.1

sin A = .0866

A = 4.97 deg

angle at ship A

A = 180 - 25 - 4.97 = 150.03 degrees

then law of cosines

d^2 = 20^2 + 4.1^2 - 2(20)(4.1)cosA

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