270 
f 
„ _ nCosa/A* 
Cosec hx e . Sm ( n Sin 2lhx ) . dx 
~~ h z +** 
-AÂ 
57 
I 
fl 
-a/A h 
-2A h 
(e — e 
\ 
j 
i — e 
unde etiam erit 
/ œ 
tang — e Cos (n Sin a/A*) — - 
hx nCos2Ïhx 
2 
tf* 57 
# 2 
