# please solve this from circle chapter

• Sep 30th 2009, 01:12 AM
saha.subham
please solve this from circle chapter
1) triangle ABC is a right angled at B. on AC, a point D is taken so that AD = DC and AB = BD. find m(< CAB).
• Sep 30th 2009, 02:09 AM
red_dog
BD is the median through the right angle af the triangle. Then $BD=AD=DC$. But $AB=BD$, then the traingle is equilateral. That means $\widehat{CAB}=60^{\circ}$
• Oct 1st 2009, 02:39 AM
saha.subham
Quote:

Originally Posted by red_dog
BD is the median through the right angle af the triangle. Then $BD=AD=DC$. But $AB=BD$, then the traingle is equilateral. That means $\widehat{CAB}=60^{\circ}$