Which of the following tables has been completed correctly using exact values?
?
A. ?
| x | cos x | sec x |
| 0° | 0 | undefined |
| 30° |  |  |
| 45° |  |  |
| 60° |  | 2 |
| 90° | 1 | 1 |
?
?
B. ?
| x | cos x | sec x |
| 0° | 1 | 1 |
| 30° |  | 2 |
| 45° |  |  |
| 60° |  |  |
| 90° | 0 | undefined |
?
?
C. ?
| x | cos x | sec x |
| 0° | 0 | undefined |
| 30° |  |  |
| 45° |  |  |
| 60° |  | 2 |
| 90° | 1 | 1 |
?
D. ?
| x | cos x | sec x |
| 0° | 0 | undefined |
| 30° |  | 2 |
| 45° |  |  |
| 60° |  |  |
| 90° | 1 | 1 |
?
E. ?
| x | cos x | sec x |
| 0° | 1 | 1 |
| 30° |  |  |
| 45° |  |  |
| 60° |  | 2 |
| 90° | 0 | undefined |
?
Answer: E
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