Which of the following is the measure of ðqrs?
a. 115°
(b.) 90°
c. 100°
d. 80°

Triangle xyz has vertices x(1,3), y(0,0)

Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z) = xyi + 5zj + 7yk, c is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 81.

9is the geometric mean between x and 12