|
sen ( +  )
+ sen ( - ) |
| sen cos = |
--------------------------------- |
|
2 |
|
|
sen ( + )
- sen ( - ) |
| cos sen = |
--------------------------------- |
|
2 |
|
|
cos ( + )
+ cos ( - ) |
| cos cos = |
--------------------------------- |
|
2 |
|
|
cos ( + )
- cos ( - ) |
| sen sen = - |
----------------------------------- |
|
2 |
|
