Saved Bookmarks
| 1. |
(Sec A + tan A -1 ) (Sec A - tan A +1 ) = 2 tan A |
|
Answer» Question is wrong lhs=2 not 2tanA 1+2tanA -1 => 2 tanA.. LHS - (SecA)^2 - (tanA-1)^2 Sec^2A - (tan^2 - 2tanA+ 1) Sec^2A - tan^2A + 2tanA - 1 1+2tanA -1 Now, LHS = RHS. So, it\'s prove.. |
|