Question:medium
The number of common tangents to the circles \( x^2 + y^2 - 4x - 6y - 12 = 0 \) and \( x^2 + y^2 + 6x + 18y + 26 = 0 \) is:
The number of common tangents to the circles \( x^2 + y^2 - 4x - 6y - 12 = 0 \) and \( x^2 + y^2 + 6x + 18y + 26 = 0 \) is:
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The number of common tangents depends on the relative distance between the centers and their radii. For externally touching circles, \( d = r_1 + r_2 \), resulting in 3 common tangents.
Updated On: Nov 28, 2025
- \( 2 \)
- \( 3 \)
- \( 4 \)
- \( 5 \)
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