Question

The length of tangent from origin to the circum-circle of the triangle with vertices (2, 1), (1, 2) and (3, 3) is​

Answer 1

Step-by-step explanation:

To find circumcentre we write the equation of perpendicular bisectors of two sides and find their intersection,

3x-y-3=0 and 6x+8y-21=0

Their intersection point is (

2

3

,

2

3

)

Radius of circumcircle = Distance of (

2

3

,

2

3

)

from (2,-2) or any other vertex =

2

5

So equation of circle = (x−

2

3

)

2

+(y−

2

3

)

2

=

2

25

which corresponds to B option .

Answer 2

Answer:

it is depend to size of triangle and circumstances circle