In triangle ABC, `2ac sin ((1)/(2) (A - B + C))` is equal to

In a triangle ABC, 2 ac sin (1/2(A-B + C)) =

If in a triangle ABC ,b +c=4a then cot(B/2)cot(C/2) is equal to

In a triangle ABC, if 2a cos ((B-C)/(2))=b+c , then secA is equal to :

If twice the square of the diameter of the circle is equal to half the sum of the squares of the sides of incribed triangle ABC,then sin^(2)A+sin^(2)B+sin^(2)C is equal to

If twice the square of the diameter of the circle is equal to half the sum of the squares of the sides of incribed triangle ABC,then sin^(2)A+sin^(2)B+sin^(2)C is equal to

If in a triangle ABC, b + c = 3a, then tan (B/2)tan(C/2) is equal to

In a triangle ABC, if (sqrt3-1)a = 2b, A = 3B , then /_C is

In a triangle ABC sin (A/2) sin (B/2) sin (C/2) = 1/8 prove that the triangle is equilateral

Statement I In any triangle ABC a cos A+b cos B+c cos C le s. Statement II In any triangle ABC sin ((A)/(2))sin ((B)/(2))sin ((C)/(2))le 1/8

In any Delta ABC, sum a sin (B -C) =