Home
Class 12
MATHS
In triangle ABC, if 3(tan'A/2' + tan'C/2...

In triangle ABC, if `3(tan'A/2' + tan'C/2') = 2 cot 'B/2` then show that, its sides a,b,c are in A.P.

Promotional Banner

Similar Questions

Explore conceptually related problems

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 triangle ABC tan(A/2), tan(B/2) and tan (C/2) are in A.P. then prove that cosA,cosB,cosC are in A.P.

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

If a cos^(2)'C/2' + c cos^(2)'A/2' = (3b)/2 then show that the sides of the triangle are in A.P.

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

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.

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.

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 any triangle ABC, if tan (A/2), tan (B/2), tan (C/2) are in A.P., prove that, cosA, cosB, cosC are also in A.P.