Prove that n in acute angled triangle `ABC , sec A+sec B +sec Cge 6`.

Prove that in an acute angled triangle ABC , sec A+sec B +sec Cge 6 .

prove that In an acute angled triangle ABC, secA+ secB+secCge6 is

Prove that in an acute triangle ABC,the least values of Sigma sec A and Sigma tan^(2)A are 6 and 9 respectively.

In an acute angled /_ABC, the least value of sec A+sec B+sec C is

In an acute angled triangle ABC, show that tan^2A+tan^2B+tan^2Cge9

In an acute angled triangle A B C , if tan(A+B-C)=1 and ,sec(B+C-A)=2, find the value of A ,Ba n dCdot

In an acute angled triangle ABC, if tan(A+B-C)=1 and ,sec(B+C-A)=2, find the value of A,B and C.

If A,B and C are the angles of a triangle ,such that sec (A-B), sec A and sec (A+B) are in arithmatic progression ,then