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

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

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

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

If the line joining the circumcentre 'O' and the incentre I is parallel to BC, then cosB + cosC =

In a Delta ABC then line joining the circumcentre to the incentre is parallel to BC, then valueof cosB+cosC is

In DeltaABC , the joining the circumcentre and incenre is parallel to BC then the value of cos B+cosC=

In Delta ABC , if the straight line joining the circumcentre and incentre is parallel to BC then show that cos B + cos C = 1