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 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 triangle ABC, line joining the circumcenter and orthocenter is parallel to side AC, then the value of tanA 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, 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, 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 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 orthocenter is parallel to side AC, then the value of tan A tan 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: