If A,B,C are angles of a triangle ,then the minimum value of `tan^(2)(A/2)+tan^(2)(B/2)+tan^(2)(C/2)` , is

If tan(A/2),tan(B/2),tan(C/2) are in H.P , where A,B,C are angles of a triangle, then the minimum value of cot^(2)(B/2) is

If A, B, C be an acute angled triangle, then the minimum value of tan^(4)A+tan^(4)B+tan^(4)C will be

If A, B, C be an acute angled triangle, then the minimum value of tan^(4)A+tan^(4)B+tan^(4)C will be

In /_\ABC , show that the minimum value of tan^2 (A/2) + tan^2 (B/2) + tan^2 (C/2) is 1.

In triangle ABC ,prove that the maximum value of tan(A)/(2)tan(B)/(2)tan(C)/(2)is(R)/(2s)

In triangle ABC, if r_(1)=3r, then the value of tan((A)/(2))(tan((B)/(2))+tan((C)/(2))) is equal to

If A ,B, C are the angles of a triangle , then : tan""(A)/(2) * tan""(B+C)/(2) +cos""(A+B)/(2) *csc""(C)/(2)=

If a tan x+ b tan y+ c tan z=m , then show that the minimum value of tan^(2)x+tan^(2)y+tan^(2)z "is" (m^(2))/(a^(2)+b^(2)+c^(2)) .

Find the minimum values of: "tan"^(2)(A)/(2)+ "tan"^(2) (B)/(2)+"tan"^(2) (C)/(2) where A,B,C are the angles of a triangle.

If A,B and C are the angles of a plain triangle and tan(A/2)=1/3 , tan(B/2)=2/3 , then tan(C/2) is equal to