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78(cot(A)/(2)+cot(B)/(2))(a sin^(2)(B)/(...

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

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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))

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

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In a triangle ABC if cot((A)/(2))*cot((B)/(2))=c,cot((B)/(2))*cot((C)/(2))=a and cot((C)/(2))*cot((A)/(2))=b then (1)/(s-a)+(1)/(s-b)+(1)/(s-c)=

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r("cot"(A)/(2)"cot"(B)/(2)"cot"(C)/(2))=