defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Circles Chord of Contact
The length of common chord of the circles (x - a)2 + y2 = a2 and x2 + (y - b)2 = b2 is
1
\(2\sqrt{a^2 + b^2}\)
2
\(\frac{ab}{\sqrt{a^2 + b^2}}\)
3
\(\frac{2ab}{\sqrt{a^2 + b^2}}\)
4
None of these