Question

What is the area of the triangle in the diagram?

Answer 1

Answer:

B

Step-by-step explanation:

To calculate the area of this triangle we must use vectors :

• vector1 (x1-0,y1-0)⇒ vector1(x1,y1)
• vector2 (x2-0,y1-0)⇒vector(x2,y1)

Now to calculte the area of this triangle we must apply this relation :

A= (1/2)*║x1y1-x2y2║

• x2≥x1 so ⇒ A=(1/2)*(x2y1-x1y1)
• A= (1/2)*y1*(x2-x1)

Answer 2

Answer:

I think the answer is B. Let me know if im right

Step-by-step explanation:

l*w*1/2 is the same as 1/2*y*(x2-x1)