Posted by Anonymous on Monday, February 11, 2013 at 11:44am.
If in a triangle ABC,
c(a+b) Cos B/2 =b(c+a) Cos C/2
then the triangle is :
1. isosceles
2. Right angled
3. isosceles or right angled
4. none of these
I want the explanation

mathsurgently needed  pal, Sunday, October 25, 2015 at 6:59am
Isosceles