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January 25, 2015

January 25, 2015

Posted by **Anonymous** on Monday, February 11, 2013 at 6:15am.

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

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