Two tangent circles and two common tangents. A and D are centres. B is midpoint of AD. C is midpoint of BE. What is the angle α?
Scroll down for a solution to this problem.
Solution
The angle α is 90°.
1 : 3+2a = a : 4+3a, gives a=1/sin(α/2)=√2.
Two tangent circles and two common tangents. A and D are centres. B is midpoint of AD. C is midpoint of BE. What is the angle α?
Scroll down for a solution to this problem.
The angle α is 90°.
1 : 3+2a = a : 4+3a, gives a=1/sin(α/2)=√2.