Home › TS EAMCET › Mathematics › Coordinate Geometry: System of Circles › Tangent length from (6, 8) to x² + y² = 36 is?
Tangent length from (6, 8) to x² + y² = 36 is?
A6
B7
C10
D8
Answer & Solution
Correct answer: D. 8
The power of the point is 100 - 36 = 64, and the squared tangent length equals the power, so the length is 8.
Related questions
The plane of the common circle of two spheres is the?Four points fix a unique sphere if they are?Base points that define a pencil of conics?Points in general position that fix a conic?The line shared by every plane of a pencil of planes is its?The common point of a pencil of lines is its?The radical plane of two spheres has equal what?In the chords and secants theorems, power of a point is the?