document.write( "Question 248158: What is the locus of the midpoints of all chords of length 4 in a given circle with radius of length 3? \n" ); document.write( "
Algebra.Com's Answer #180872 by vleith(2983)![]() ![]() ![]() You can put this solution on YOUR website! Imagine a chord of length 4 inside a circle with radius 3. \n" ); document.write( "Now draw lines from the two chord endpoints to the center of the circle. \n" ); document.write( "You see that you have an isosceles triangle. \n" ); document.write( "Draw in the radius that intersects the chord midpoint. \n" ); document.write( "Now you have two triangles, each is a right triangle with a hypotenuse of 3 and one side of 2. \n" ); document.write( "Use the Pythagorean theorem to solve for the third side. <-- keep this value \r \n" ); document.write( "\n" ); document.write( "Now imagine \"sliding\" that chord around inside the circle. What pattern does the midpoint make? \r \n" ); document.write( "\n" ); document.write( "So there you have it, You have a circle around the same center, but with radius of the length you solved for above.\r \n" ); document.write( "\n" ); document.write( "Get it? \n" ); document.write( " |