document.write( "Question 1183414: An electric pole is 15m high. From a point Q, due south of the pole, the angle of elevation of the pole is 20. From another point P north east of the pole, the angle of elevation of the top of the pole is 30. Calculate correct to three significant figures, the distance between P and Q. \n" ); document.write( "

Algebra.Com's Answer #813722 by ikleyn(52817) $\"\"$ $\"About$

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document.write( "Based on given data, calculate the distance of point Q from the pole  a =   meters.\r\n" );
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document.write( "Next calculate the distance of point P from the pole  b =   meters.\r\n" );
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document.write( "Now you have an obtuse triangle with the sides \"a\" and \"b\" and the obtuse angle of 135 degrees between them.\r\n" );
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document.write( "The final step is to apply the cosine law and to find the length of the third side of the triangle.\r\n" );
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