" (ii) "1-tan(A)/(2)tan(B)/(2)=(2c)/(a+b+c)

Prove the questions : 1-tan.(A)/(2)tan.(B)/(2) = (2c)/((a+b+c))

Prove the questions : 1-tan.(A)/(2)tan.(B)/(2) = (2c)/((a+b+c))

In any Delta ABC, prove that :1-tan((A)/(2))tan((B)/(2))=(2c)/(a+b+c)

Prove that 1-tan(A/2)tan(B/2)=(2c)/(a+b+c) .

In DeltaABC , if "tan"(A)/(2)"tan"(C)/(2)=(1)/(2) , then a ,b and c are in

In Delta ABC if tan((A)/(2))tan((B)/(2))+tan((B)/(2))tan((C)/(2))=(2)/(3) then a+c

In any triangle ABC, prove that following: (c)/(a+b)=(1-tan((A)/(2))tan((B)/(2)))/(1+tan((A)/(2))tan((B)/(2)))

If A+B+C=pi , then tan((A)/(2))tan((B)/(2))+tan((B)/(2))tan((C)/(2))+tan((C)/(2))tan((A)/(2)) is equal to a) (pi)/(6) b)3 c)2 d)1

If A+B+C=pi, show that : tan.(A)/(2)tan.(B)/(2)+tan.(B)/(2)tan.(C)/(2)+tan.(C)/(2)tan.(A)/(2)=1 Hence deduce that : cot.(A)/(2)+cot.(B)/(2)+.cot.(C)/(2)=cot.(A)/(2).cot.(B)/(2)tan.(C)/(2) .

In a triangle A B C , if a, b, c are in A.P then tan (A)/(2), tan (B)/(2), tan (C)/(2) are in