If `veca,vecb,vec c` are position vector of vertices of a triangle ABC, then unit vector perpendicular to its plane is

If vec a ,\ vec b ,\ vec c are position vectors of the vertices of a triangle, then write the position vector of its centroid.

If vec a,vec b,vec c are position vectors of the vertices of a triangle,then write the position vector of its centroid.

If veca , vecb, vecc are the position vectors of the vertices. A,B,C of a triangle ABC. Then the area of triangle ABC is

If veca , vecb, vecc are the position vectors of the vertices. A,B,C of a triangle ABC. Then the area of triangle ABC is

If veca,vecb,vecc are position vectors of the vertices A,B,C of a triangle ABC, show that the area of the triangle ABC is (1)/(2) |vecaxxvecb+vecbxxvecc+veccxxveca| . Also deduce the condition for collinearity of the points A,B and C.

Find a unit vector perpendicular to both veca and vecb .

If veca , vecb , vecc are position vectors of the vertices A, B, C of a triangle ABC, show that the area of the triangle ABC is 1/2 ​ [ veca × vecb + vecb × vecc + vecc × veca ] . Also deduce the condition for collinearity of the points A, B and C.

If veca , vecb , vecc are position vectors of the vertices A, B, C of a triangle ABC, show that the area of the triangle ABC is 1/2 ​ [ veca × vecb + vecb × vecc + vecc × veca ] . Also deduce the condition for collinearity of the points A, B and C.

Which of the following is the unit vector perpendicular to vecA and vecB