Answer
They are perpendicular.
Work Step by Step
A radius is always perpendicular to a plane that is tangent to its sphere at its endpoint.
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 9 - Section 9.4 - Polyhedrons and Spheres - Exercises - Page 427: 42
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