Search found 13 matches
- Fri Dec 31, 2010 8:53 pm
- Forum: Divisional Math Olympiad
- Topic: Problems from dhk div 2010!!
- Replies: 9
- Views: 4133
I didnt understood that nSn(x) Sn-1(x). My ans is like that sin sin sin sin(x)=x(because x is so small so sin x =x) so Sn(x)=x and cos Sn (x)=cos x=1