document.write( "Question 1099730: Find the equation of the line tangent to the circle x2 + y2 = 25 at point (3,4) \n" ); document.write( "
Algebra.Com's Answer #714188 by Boreal(15235)\"\" \"About 
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y^2=25-x^2
\n" ); document.write( "2ydy/dx=-2x
\n" ); document.write( "dy/dx=-x/y\r
\n" ); document.write( "\n" ); document.write( "when x=3, y'=-3/4
\n" ); document.write( "use point slope formula y-y1=m(x-x1), m slope and (x1, y1) point.
\n" ); document.write( "y-4=(-3/4)(x-3)
\n" ); document.write( "y=(-3/4)x+6.25
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