If `cos A + cos B + 2 cos C = 2`, then the sides of triangle ABC are in

If cos A+cos B+2cos C=2, then the sides of triangle ABC are in

In Delta ABC , if cos A+2 cos B+cos C=2, then the sides of the triangle are in

In a triangle A B C , if cos A+2\ cos B+cos C=2. prove that the sides of the triangle are in A.P.

In a triangle A B C , if cos A+2\ cos B+cos C=2. prove that the sides of the triangle are in A.P.

In a triangle ABC ,cos A + cos B + cos C = 3/2 , then the triangle ,is

In Delta ABC, if cos A+cos B+ cos C=3//2 , then the triangle is

In Delta ABC , (a)/( cos A) = (b) /( cos B ) = ( c ) /( cos C ) , If b= 2 then the area of the triangle is

In triangle ABC, cos^2A + cos^2B - cos^2C = 1, then the triangle is necessarily