Saved Bookmarks
| 1. |
p,Prove that |
|
Answer» Lhs =cos 24+cos 55+cos 125+cos 204+cos 300= cos 24 +cos 55 +cos (180-55)+cos (180-24)+cos(270+30)= cos 24 +cos 55-cos 55-cos24+sin30=sin 30=1/2=rhs |
|