In triangle ABC, the line joining the circumcenter and incenter is parallel to side AC, then `cosA+cosC` is equal to `-1` (b) `1` (c) `-2` (d) `2`

In triangle ABC, the line joining the circumcenter and incenter is parallel to side AC, then cos A + cos C is equal to

In a triangle ABC,the line joining the circumcentre and incentre is parallel to BC, then cos B+cos C is equal to:

In triangle ABC, line joining the circumcenter and orthocenter is parallel to side AC, then the value of tan A tan C is equal to

In triangle ABC,line joining the circumcenter and orthocentre is parallel to side AC,then the value of tan A tan C is equal to sqrt(3)(b)3(c)3sqrt(3)(d) none of these

In triangle ABC if the line joining incenter to the circumcenter is parallel to the base BC, then the value of (cosB + cosC-1) is equal to

In a triangle ABC, if a=2,b=4,c=5 then cosA=

The sides of a triangle are in A.P. then the line joining the centroid to the incentre is parallel to (a)The largest side (b) The smaller side (C)The middle side (d)None of the sides

Prove that the distance between the circumcenter and the incenter of triangle ABC is sqrt(R^(2)-2Rr)

If sinA+sinB+sinC=3 . Then: cosA+cosB+cosC= (a) 0 (b) 1 (c) 2 (d) 3

In Delta ABC if the orthocentre is (1,2) and the circumcenter is (0,0) then centroid of Delta ABC is.