Recent content by heidihiiiiiii

Homework Statement Triangle ABC formed by two vectors a = ( 2, 10, 25 ) and b = ( 5, 4, -2 ) attached at a point A. The area of the triangle is (81 root 5) / 2 And I need to find the length of the height AM (AM perpendicular to BC and the point M belongs to the line BC). Don't know where to...

Thanks..I thought I was on the right lines, just needed reassuring :) I got the area of the traingle to be 81root5 / 2 But now I need to calculate the length of the height PM (where PM perpendicular to BC and the point M belongs to the line BC) I'm guessing as I know the area and 2...

Homework Statement I have a triangle ABC formed by vectors a = ( 2, 10, 25 ) and b = ( 5, 4, -2 ) attached at a point P. And I have to calculate the area of the triangle ABC. Homework Equations I'm pretty certain that I need to find the area of the parellogram and then half it. So I...