Saved Bookmarks
| 1. |
(: F_ 00 + tand) (1 - sin) = реореж80... |
|
Answer» lsec theta+tan theta(1-sin theta) 1/cos theta + sin theta/cos theta(1-sin theta) 1+sin theta/cos theta(1-sin theta) 1-sin²theta/cos theta cos²theta/cos theta=cos theta |
|