document.write( "Question 834934: You attempt to set off in a sail boat for an island that is 8 km away from the dock. After having traveled a distance of 7.2 km in a straight line, you discover that you are 10 degrees off course. How far are you from the island at that point? \n" ); document.write( "
Algebra.Com's Answer #503258 by josgarithmetic(39620)\"\" \"About 
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This is a triangle, the departure point is at an angle 10 degrees. One side of this angle is 7.2 km, and the other side of this angle is 8 km. The last side of this triangle is how far you are from the other end point of the 8 km. side.\r
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\n" ); document.write( "\n" ); document.write( "Draw this triangle to see more comfortably.\r
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\n" ); document.write( "\n" ); document.write( "Law of Cosines.
\n" ); document.write( "How far you are, that unknown side, d.\r
\n" ); document.write( "\n" ); document.write( "\"7.2%5E2%2B8%5E2-2%287.2%29%288%29cos%2810%29=d%5E2\"
\n" ); document.write( "\"highlight%28d=sqrt%287.2%5E2%2B8%5E2-2%287.2%29%288%29cos%2810%29%29%29\"
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