If the sides `a ,b ,c` of a `triangleABC` are in `HP,` prove that `sin^2A/2,sin^2B/2,sin^2C/2` are in `HP`

If the sides a , b and c of A B C are in AdotPdot, prove that 2sin(A/2)sin(C/2)=sin(B/2)

If sides a , b , c of the triangle A B C are in AdotPdot , then prove that sin^2A/2cos e c\ 2A ;sin^2B/2cos e c\ 2B\ ;sin^2C/2cos e c\ 2C are in H.P.

If sides a,b,c of the triangle ABC are in A.P,then prove that sin^(2)((A)/(2))cos ec2A;sin^(2)((B)/(2))cos ec2B;sin^(2)((c)/(2))cos ec2c 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

In triangleABC prove that sin^2(A/2)+sin^2(B/2)+sin^2(C/2)=1-2sin(A/2)sin(B/2)sin(C/2)

In a triangle ABC, prove that b^(2) sin 2C+c^(2) sin 2B=2bc sin A .

In triangleABC,A+B+C=pi ,show that sin^2A+sin^2B-sin^2C=2sinAsinBcosC

Prove that in a A B C ,sin^2A+sin^2B+sin^2C<=9/4dot

Prove that in a A B C ,sin^2A+sin^2B+sin^2C<=9/4dot

Prove that in a A B C ,sin^2A+sin^2B+sin^2C<=9/4dot