oka thama cosh,sinh wala artha dak weema.....
onama z complex number ekakata ex {exp[x]} mehema artha dakkuwahama...
sin[x]= ( exp[ix] - exp[-ix ])/2
cos[x]= ( exp[ix] + exp[-ix ])/2;
i2 = −1..[i kiyanne -1ke wargamulaya....]
sinh(x) = ( exp[x] - exp[-x ])/2
cosh(x) = ( exp[x] + exp[-x] )/2...