Tangents to the curve x2 + y2 = 2 at the points (1, 1) and (-1, 1) are
A. parallel
B. perpendicular
C. intersecting but not at right angles
D. none of these
Answer:B
Tangents to the curve x2 + y2 = 2 at the points (1, 1) and (-1, 1) are
A. parallel B. perpendicular C. intersecting but not at right angles D. none of these