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document.write( "The other tutor just gave you the answer but didn't show you how\r\n" );
document.write( "to get it.\r\n" );
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document.write( "Here is A and B:\r\n" );
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document.write( "Draw a line connecting them.\r\n" );
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document.write( "From A we draw a line of arbitrary length vertically upward (in green) \r\n" );
document.write( "to indicate the direction of north from A. \r\n" );
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document.write( ">>...the bearing of A to B is 138°...<<\r\n" );
document.write( "That means that if we measure the angle indicated by the red arc below\r\n" );
document.write( "IN THE CLOCKWISE direction, we find that this clockwise angle measures \r\n" );
document.write( "138°: \r\n" );
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document.write( " 
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document.write( "Next we do a similar thing at B. From B we draw a line of arbitrary length\r\n" );
document.write( "vertically upward (also in green) to indicate the direction of north from B.\r\n" );
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document.write( " 
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document.write( "We are to find the number of degrees in the CLOCKWISE measured angle \r\n" );
document.write( "from A to B, indicated by the other red arc below:\r\n" );
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document.write( "What angle does that second red arc indicate the measure of?\r\n" );
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document.write( "To find out, one easy way is to extend the line from A to B at B, \r\n" );
document.write( "like this:\r\n" );
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document.write( " 
\r\n" );
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document.write( "Then we can see that the angle indicated by the blue arc below is \r\n" );
document.write( "also 138°, because the two green lines are parallel and the \r\n" );
document.write( "transversal AB cuts them at B. Then the rest of the angle indicated\r\n" );
document.write( "by the red arc is 180°, so we add the two together: \r\n" );
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document.write( "So the bearing from B to A is 138° + 180° or 318°.\r\n" );
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document.write( "Edwin
. \n" );
document.write( "![\"\"](\"/images/stars/stars-13.gif\")
