If `sin^2(A/2), sin^2(B/2), and sin^2(C/2)` are in `H.P.`, then prove that the sides of triangle are in `H.P.`

In Delta ABC, if sin^2""A/2, sin^2""B/2,sin^2""C/2 are in H.P, then a,b,c in

If sin^(2).(A)/(2)+sin^(2).(B)/(2)+sin^(2).(C)/(2) are in H.P , show that a , b, c are in H. P

In triangleABC , if sin^(2)(A/2),sin^(2)(B/2),sin^(2)(C/2) be in H.P., then a , b , c will be in

If cos A+cos B=4sin^(2)((C)/(2)) then prove that sides a,c,b of an triangle ABC in A.P.

In !ABC , if sin^(2)A/2,sin^(2)B/2,sin^(2)C/2 be in H.P., then a , b , c will be in

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

In Delta ABC if sin^(2)((A)/(2)),sin^(2)((B)/(2)),sin^(2)((C)/(2)) are in H.P then a,b,c will be in ,sin^(2)((C)/(2))

In /_\ABC if sin2A+sin2B = sin2C then prove that the triangle is a right angled triangle

If the side lengths a,b and c are in A.P. then prove that cos ((A-C)/2) = 2sin (B/2)