I have to find the distance for the the points -1,1 at 135 degrees. (Find the distance d from the origin to that point) Using the distance formula, I am getting a 0. Is this correct?
It should be obvious that the distance between the point (1,1) and (0,0) is not 0. The formula for distance betwen points A and B is:
$\displaystyle d = \sqrt{(x_A - x_B)^2 + (y_A - y_B)^2}$
Here point A is$\displaystyle (x_A,y_A) = (1,1) $ and point B is $\displaystyle (x_B,y_B)=(0,0)$.