Find the value of `((a+b)^(2))/((b-c)(c-a))+((b+c)^(2))/((a-b)(c-a))+((c+a)^(2))/((a-b)(b-c))`

Value of the expression ((a-b)^(2))/((b-c) (c-a)) +((b-c)^(2))/((a-b) (c-a)) +((c-a)^(2))/((a-b) (b-c)) is

The value of (tan((A)/(2)))/((a-b)(a-c))+(tan((B)/(2)))/((b-c)(b-a))+(tan((c)/(2)))/((c-a)(c-b))

If a+b+c=0, find the value of (a+b)/(c)-(2b)/(c+a)+(b+c)/(a)

If a+b+c=0 , find the value of (a^2)/((a^2-b c))+(b^2)/((b^2-c a))+(c^2)/((c^2-a b)) (a) 0 (b) 1 (c) 2 (d) 4

If a+b=2c, then the value of (a)/(a-c)+(b)/(b-c) is (1)/(2)(b)1(c)2(d)3