Saved Bookmarks
| 1. |
The angle between the tangents from the origin to the circle (x − 7)2 + (y + 1)2 = 2 is (1) π/3 (2) π/4 (3) π/2 (4) π/6 |
|
Answer» Correct option (3) π/2 Explanation: (x − 7) 2 + (y + 1) 2 = 52 . The equation of the director circle is (x − 7)2 + (y + 1)2 = 2 × 52 (0, 0) satisfies this equation; origin lies on the director circle. Angle between the tangents is 90° or π/2 |
|