Which of the following is false?
A. 30°, 45°, 60° can be the direction angles of a line is space.
B. 90°, 135°, 45° can be the direction angles of a line is space.
C. 120°, 60°, 45° can be the direction angles of a line in space.
D. 60°, 45°, 60° can be the direction angles of a line in space.
Answer:A
Which of the following is false?
A. 30°, 45°, 60° can be the direction angles of a line is space. B. 90°, 135°, 45° can be the direction angles of a line is space. C. 120°, 60°, 45° can be the direction angles of a line in space. D. 60°, 45°, 60° can be the direction angles of a line in space.