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Is line \(y = kx + b\) tangent to circle \(x^2 + y^2 = 1 ?\)

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by Vincen » Sun May 03, 2020 12:45 pm

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Is line \(y = kx + b\) tangent to circle \(x^2 + y^2 = 1 ?\)

(1) \(k + b = 1\)
(2) \(k^2 + b^2 = 1\)


[spoiler]OA=E[/spoiler]

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