Question

Length of chord on the line 4x – 3y – 10 = 0 cut off by the circle x² + y² – 2x + 4y – 4 = 0 is –

• A. 10
• B. 6
• C. 12
• D. None of these

Answer 1

Answer: (B)

6

Answer 2

x² + y² – 2x + 4y – 4 = 0 Ž r =$\sqrt{1 + 4 + 4} = 3$

4x – 3y – 10 = 0 Ž P = 4(1) – 3(–2) – 10 = 0