Geometry of Tangents | ISI Entrance B.Stat 2009
Objective Problem Geometry (ISI Entrance)
Find the radius of smaller circle. 
- 0
- 1
- $\frac{3}{4}$
- 2
Key Concepts
2D Geometry
Similar Triangles
Linear Equations
Check the Answer
Answer: $\frac{3}{4}$
ISI Entrance B.Stat Objective Problem, India
Test of Mathematics at 10+2 Level by East West Press
Try with Hints
Given triangle to smaller circle and given triangle to bigger circle are similar.
By similarity,
$\frac{2-x}{5}=\frac{x}{3}$
Solving we get x=$\frac{3}{4}$
Watch the Video
Other useful links
- https://www.youtube.com/watch?v=IgXv5Skqpsg&t=10s
- https://cheenta.com/series-and-trigonometry-isi-entrance-2009/
Related Program
I.S.I. & C.M.I. Entrance Program
Taught by students and alumni of I.S.I. & C.M.I.