Recent content by steele1

  1. steele1

    Prove area of triangle from cross products of vertex vectors from origin

    so 1/2|VxW| would give the area, VxW=(A-B)x(C-B), could you foil and get AxC-AxB-BxC+BxB, and BxB=0, and -AxB=BxA, and -BxC=CxB. So I end up with 1/2|(AxC)+(BxA)+(CxB)| which is all backwards. @stevendaryl
  2. steele1

    Prove area of triangle from cross products of vertex vectors from origin

    haha yup, wow I feel dumb. thought way too into that. So you have V=A-B and W=C-B.
  3. steele1

    Prove area of triangle from cross products of vertex vectors from origin

    I'm honestly not sure how to go about doing that.
  4. steele1

    Prove area of triangle from cross products of vertex vectors from origin

    Homework Statement The three vectors A, B, and C point from the origin O to the three corners of a triangle. Show that the area of the triangle is given by 1/2|(BxC)+(CxA)+(AxB)|. Homework EquationsThe Attempt at a Solution I know that the magnitude of the cross product of any two vectors...
See more