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avatar+1999 

Let $k$ be a positive real number. The line $x + y = 3 + k$ and the circle $x^2 + y^2 = k$ are drawn. Find $k$ so that the line is tangent to the circle.

 Jun 9, 2024
 #1
avatar+729 
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The correct value of k is sqrt(2) - 1.

 Jun 9, 2024

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