Saved Bookmarks
| 1. |
Prove that :sin^2 x . cos^2 y - cos^2 x . sin^2 y = sin^2 x - sin^2 y |
|
Answer» Prove that : sin^2 x . cos^2 y - cos^2 x . sin^2 y = sin^2 x - sin^2 y |
|