Saved Bookmarks
| 1. |
secx--tan xcos xcos xsec x + tan x |
|
Answer» 1/(secx-tanx) - 1/cosx= secx + tanx -secx= secx - (secx-tanx)= 1/cosx - (sec²x-tan²x)/(secx+tanx)=1/cosx - 1/(secx+tanx) |
|