document.write( "Question 1173416: Q.3 Alexa and Luke left the dock from the same point in two separate boats to place markers for a boat
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Algebra.Com's Answer #798617 by ikleyn(52814) $\"\"$ $\"About$

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document.write( "You are given two sides of the triangle a= 85 m  and  b= 102 m,\r\n" );
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document.write( "and the third side  c= 127 m opposite to the angle under consideration.\r\n" );
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document.write( "You need to find the angle   between the sides  \"a\"  and  \"b\".\r\n" );
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document.write( "Use the Cosine law \r\n" );
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document.write( "    c^2 = .\r\n" );
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document.write( "From this formula,  find  \r\n" );
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document.write( "     =  =  = -0.08651.\r\n" );
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document.write( "Then   = arccos(-0.08651) = 1.6574 radians = 95 degrees (approximately).\r\n" );
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document.write( "ANSWER.  The angle is about 95 degrees.\r\n" );
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