document.write( "Question 795664: P is a point on the line x = 4 such that the tangent from P to the circle x^2 + y^2 = 4 has length 6 . Find the possible coordinates and illustrate graphically\r
\n" ); document.write( "\n" ); document.write( "Can you please help me out? Thanks so much in advance :)
\n" ); document.write( "Can you also show all the work it would really help me understand better:) \n" ); document.write( "

Algebra.Com's Answer #481117 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
This seems to be a possible Calculus, derivative problem. I have not completed this question all the way yet, but my strategy seems to be:\r
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\n" ); document.write( "\n" ); document.write( "The derivative of the upper branch of the circle's function would be y'= $\"%28-x%29%2Fsqrt%284-x%5E2%29\"$ . The general point on this circle, for this tangent line, would be (x, $\"%28-x%29%2Fsqrt%284-x%5E2%29\"$ ).\r
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\n" ); document.write( "\n" ); document.write( "The line x=4 would have a general point, (4,y).\r
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\n" ); document.write( "\n" ); document.write( "Next in the process is to use the Distance formula between these two general points and equate distance to 6, and then solve for x. \n" ); document.write( "

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