If in a triangle `A B C ,/_C=60^0,` then prove that `1/(a+c)+1/(b+c)=3/(a+b+c)` .

In a triangle A B C ,/_C=60^0, then prove that: 1/(a+c)+1/(b+c)=3/(a+b+c)dot

In a A B C , if /_B=60^0 , prove that (a+b+c)(a-b+c)=3c a

In a triangle A B C prove that a//(a+c)+b//(c+a)+c//(a+b)<2

In any triangle A B C , prove that: (b-c)cot A/2+(c-a)cot B/2+(a-b)cot C/2 =0

In any triangle A B C , prove that: a^3cos(B-C)+b^3cos(C-A)+c^3cos(A-B)=3a b c

In any triangle A B C , prove that: (b-c)cot (A/2)+(c-a)cot (B/2)+(a-b)cot (C/2) =0

In any triangle A B C , prove that: (b-c)/(b+c)=(tan((B-C)/2))/(tan((B+C)/2))

In any triangle A B C , prove that: \ asin(B-C)+b sin(C-A)+csin(A-B)=0

In a triangle A B C ,a=4,b=3,/_A=60^0 then c is root of the equation c^2-3c-7=0 (b) c^2+3c+7=0 (c) c^2-3c+7=0 (d) c^2+3c-7=0

In any triangle A B C , prove that: ("sin"(B-C))/("sin"(B+C))=(b^2-c^2)/(a^2)