InterviewSolution
Saved Bookmarks
| 1. |
C_(1):x^(2)+y^(2)=r^(2)and C_(2):(x^(2))/(16)+(y^(2))/(9)=1 interset at four distinct points A,B,C, and D. Their common tangents form a peaallelogram A'B'C'D'. If A'B'C'D' is a square, then the ratio of the area of circle C_(1) to the area of circumcircle of DeltaA'B'C' is |
|
Answer» `9//16` `y=+-x+-5` for which DIAGONAL length A'C' is 10. Then the area of circumericle of `DeltaA'B'C' "is"25pi` Also, the area of the circle `C_(1)` is `25//pi` . Hence the require ration is 1/2
|
|