Triangle abc is rotated 45° about point x, resulting in triangle efd. If ef = 4. 2 cm, df = 3. 6 cm, and de = 4. 5 cm, what is cb? 3. 3 cm 3. 6 cm 4. 2 cm 4. 5 cm.

Which of the following would be considered a nec code violation in regards to the installation of luminaires? a. an outdoor lighting fixture mounted to a tree b. a five-pound, 12-inch diameter light fixture supported by the screw shell of the lampholder c. florescent lay-in fixtures attached to the framing sections of a suspended ceiling with sheet-metal screws d. track lighting over a sink, 2 feet from a bathtub