In ` A B C ,(cot A/2+cotB/2)(asin^2B/2+bsin^2A/2)=` `cotC` (b) `ccotC` (c) `cotC/2` (d) `ccotC/2`

In DeltaABC , prove that: 2[asin^(2)B/2+bsin^(2)A/2]=a+b-c

In DeltaABC , (b-c)cotA/2+(c-a)cotB/2+(a-b)cotC/2=?

If A+B+C=pi , prove that : cot( A/2)+ cot(B/2) + cot( C/2) = cot( A/2) cot(B/2) cot(C/2)

In Delta ABC, prove that: (cot((A)/(2))+cot((B)/(2)))(a sin^(2)((B)/(2))+b sin^(2)((A)/(2)))=c cot((C)/(2))

a^(2)cot A+b^(2)cot B+c^(2)cot C=

In any triangle ABC prove that cot(A/2)+cot(B/2)+cot(C/2)=cot(A/2)cot(B/2)cot(C/2)

Delta ABC;(b-c)(cot A)/(2)+(c-a)(cot B)/(2)+(a-b)(cot C)/(2)

If A+B+C=pi Prove that cot A/2+cot tB/2+cot C/2=cot A/2cot B/2cot C/2

In triangle ABC, if |[1,1,1], [cot (A/2), cot(B/2), cot(C/2)], [tan(B/2)+tan(C/2), tan(C/2)+ tan(A/2), tan(A/2)+ tan(B/2)]| then the triangle must be (A) Equilateral (B) Isoceless (C) Right Angle (D) none of these