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The tangent equation of a circle passing through the square of X + the square of y = 25 (- 3,4) is
Hello!
Remember a conclusion: the tangent equation of the circle passing through the circle (x-a) &# 178; + (y-b) &# 178; = R & # 178; the circle of the previous point (m, n) is (M-A) (x-a) + (N-B) (X-B) = R & # 178;
So the answer to this question: - 3x + 4Y = 25, that is, 3x - 4Y = 25 = 0
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