Tangent to a circle
Two-dimensional geometry · Mathematics
Study notes
Q: Find the tangent to x² + y² = 25 at (3,4), and the length of tangent from (7,1). T = 0: x(3) + y(4) = 25 → 3x + 4y = 25. S₁ = 49+1−25 = 25. Length = √25 = 5.
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Two-dimensional geometry · Mathematics
Q: Find the tangent to x² + y² = 25 at (3,4), and the length of tangent from (7,1). T = 0: x(3) + y(4) = 25 → 3x + 4y = 25. S₁ = 49+1−25 = 25. Length = √25 = 5.