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1. |
A circle is drawn on the chord of a circle x2 + y2 = a2 as diameter. The chord lies on the line x + y = a. What is the equation of the circle? |
A. | x2 + y2 – ax – ay + a2 = 0 |
B. | x2 + y2 – ax – ay = 0 |
C. | x2 + y2 + ax + ay = 0 |
D. | x2 + y2 + ax + ay – 2a2 = 0 |
Answer» C. x2 + y2 + ax + ay = 0 | |