If in `Delta ABC, tan.(A)/(2) = (5)/(6) = (2)/(5)`, then prove that a, b, and c are in A.P.

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

In a Delta ABC, tan.(A)/(2) = (5)/(6), tan.(C )/(2) = (2)/(5) , then :

In a Delta ABC tan((A)/(2))=(5)/(6) and tan((B)/(2))=(20)/(37) then

If in Delta ABC, (a -b) (s-c) = (b -c) (s-a) , prove that r_(1), r_(2), r_(3) are in A.P.

In a !ABC ,tan(A/2)=5/6 ,tan(C/2)=2/5 ,then

In a Delta ABC , if tan.(A)/(2)=(5)/(6), tan.(B)/(2)=(20)/(37) , then which of the following is/are correct ?

In Delta ABC if 2c cos^(2)((A)/(2))+2a cos^(2)((C)/(2))-3b=0. Prove that a,b,c are in AP

If in Delta ABC , sides a, b, c are in A.P. then

In a Delta ABC, prove that tan((A+B)/(2))=cot((c)/(2))