document.write( "Question 150317: Please help me answer the following:
\n" ); document.write( "(-5,12) are the coordinates of a point in rectangular form. Find this point in polar form (r,A), with A expressed in radians.
\n" ); document.write( "The answer choices include:
\n" ); document.write( "1. (13,112.6)
\n" ); document.write( "2. (13,1.97)
\n" ); document.write( "3. (10.9,1.97)
\n" ); document.write( "4. (10.9,112.6)
\n" ); document.write( "Thanks, Tami \n" ); document.write( "

Algebra.Com's Answer #110293 by Edwin McCravy(20086) $\"\"$ $\"About$

You can put this solution on YOUR website!
Please help me answer the following:
\n" ); document.write( "(-5,12) are the coordinates of a point in rectangular form.
\n" ); document.write( "Find this point in polar form (r,A), with A expressed in radians.
\n" ); document.write( "The answer choices include:
\n" ); document.write( "1. (13,112.6)
\n" ); document.write( "2. (13,1.97)
\n" ); document.write( "3. (10.9,1.97)
\n" ); document.write( "4. (10.9,112.6)
\n" ); document.write( "Thanks, Tami\r
\n" ); document.write( "\n" ); document.write( "

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document.write( "Plot the point:\r\n" );
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document.write( "Draw a perpendicular from the point down to the x-axis,\r\n" );
document.write( "label it , the y-coordinate.\r\n" );
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document.write( "Label the x-coordinate .\r\n" );
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document.write( "Draw a radius vector (r) from the point to the origin.\r\n" );
document.write( "Indicate the angle A with a curved line.\r\n" );
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document.write( "Now we calculate r using the Pythagorean theorem:\r\n" );
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document.write( "And we calculate angle A by the trig equation\r\n" );
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document.write( "We find the reference angle using the inverse tangent:\r\n" );
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document.write( "However, since this angle is in the second quadrant, we\r\n" );
document.write( "find the angle A by subtracting the reference angle from \r\n" );
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document.write( " or about \r\n" );
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document.write( "Now we place it in the form\r\n" );
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document.write( "(r,A) = (13,1.97), choice 2\r\n" );
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document.write( "Edwin

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