A is the major axis horizontal or vertical b find the exact

Question

1. Let u-> = ?4, -16? and v-> = ?8, 2?.  

(b) Calculate the dot product u-> v->. Show work.

(c) Determine the angle betweenu-> and v->. Round the result to the nearest degree. Show work.

2. An ellipse has the equation (x-1)^2/49 + (y-4)^2/25 = 1

(a) Is the major axis horizontal or vertical?

(b) Find the exact values of the foci of the ellipse.