Linear Algebra 2 question
posted by Robert .
Hello, I have another question from my linear algebra class. I'm asked to find the area of a triangle using determinants, but they don't give me the vertices, only the sides. Where A,B,C and D are the vertices, u and v are 2 out of the 3 sides. Now they give me u=(3,1) and v=(0,2). My question is, can I still use the formula 0.5[x2x1 + y2y1] even if the coordinates I have are not those of the vertices?
Thank you

Linear Algebra 2 question 
Robert
sorry I wrote D, but there is no D, just AB and C
Respond to this Question
Similar Questions

Math...Geometry
Hello, Can someone please tell me if I worked this out correct and ended with the right answer? 
Math Geometry
A triangle has vertices P(a,b), Q(c,d), and R(e,f). You are asked to prove that the image triangle angle P'Q'R' of triangle angle PQR after reflection across the yaxis is congruent to the preimage. What coordinates should you use … 
Need Help!! Algebra
I am having trouble in this class and need help with this question.. What similarities and differences do you see between functions and linear equations studied Are all linear equations functions? 
Algebra
Determine if the relationship represented in the table is linear. If it is linear, write an equation. x 2 5 7 10 12 20 y 3 0 2 5 7 15 A) Linear; y = x  5 B) Linear; y = 5x C) Linear; y = x + 5 D) Not linear I'm thinking it's C … 
Algebra
For which table(s) of values in Exercises 39–42 is the relationship linear? 
7th Grade Geometry
A Rectangle with vertices A B C AND D. The triangle is divided with vertices P AND Q. How many right triangles can you make with using only three of the vertices {A B C D P OR Q}. AND also the answer for this question is not 12 or … 
Vectors/Calculus
The question asks me to find the area of the triangle with the given vertices. (The area A of the triangle having u and v as adjacent sides is given by A=1/2 u x v.) the vertices are: (0,0,0) (1,2,3) (3,0,0) 
Linear Algebra
True/False question Suppose that A is a 2 x 3 matrix such that A[1, 1, 1]^t = [2, 3]^t = A[2, 3, 4]^t. Then [1, 2, 3]^t belongs to the nullspace of A. I have no idea how to start this question/what it means. 
Ross
Hello, can anyone give me some help with these excersises? 
Linear Algebra
Hello, could anyone help me with this excersise of linear algebra, Please?