If the vertices of a triangle A, B, C are A(0, 0), B(2, 1), C(9, -2) then cosB =

The vertices of a triangle ABC are A(0, 0), B(2, -1) and C(9, 2) , find cos B .

The vertices of a triangle ABC are A(0, 0), B(2, -1) and C(9, 2) , find cos B .

The vertices of a triangle ABC are A(0,0),B(2,-1) and C(9,2). Evaluate cos B

The vertices of a triangle are A(a,0)B(0,b)and C(a,b)

The vertices of the triangle ABC are A(1, 2), B (0, 0) and C (2, 3), then the greatest angle of the triangle is

The vertices of a triangle are A(0, 0), B(1, 0) and C(0, 2). The point of intersection of bisectors of internal angles is

The vertices of a triangle are A(0, 0), B(0, 2) and C(2, 0). The distance between circumcentre and orthocentre is

The vertices of a triangle are A(0, 0), B(0, 2) and C(2, 0). The distance between circumcentre and orthocentre is

The vertices of a triangle are A(0, 0), B(0, 2) and C(2, 0). The distance between circumcentre and orthocentre is

If the vertices A,B, C of a triangle ABC are (1,2,3),(-1, 0,0), (0, 1,2), respectively, then find angle ABC .