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

In Delta ABC, tan""(A)/(2)+tan ""(B)/(2)=

In Delta ABC, if tan (A)/(2) = (5)/(6) and tan (C )/(2) = (2)/(5) , then show that a,b,c, are in A.P.

In Delta ABC, tan ""A/2 * tan ""(B)/(2) + tan""(B)/(2) * tan""(C)/(2) + tan ""(C)/(2)* tan""A/2=

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

In Delta ABC, " if " tan""(A)/(2)=(5)/6 , tan""(B)/(2)=(20)/(37) " then " tan""(C)/(2)=

In Delta ABC, if tan ""(A)/(2), tan""(B)/(2) , tan""(C)/(2) are in A.P. then cos A , cos B , cos C are in

In Delta ABC, tan 2A+ tan 2B+ tan 2C=

* In a Delta ABC,If tan((A)/(2)),tan((B)/(2)),tan((C)/(2)) are in H.P.then a,b,c are in ,tan((C)/(2))

In a Delta ABC ,if 3 tan (A/2) tan (C/2)=1 then a,b,c are in