/3*csc(2*x)\ lim |----------| 5*pi \ 4 / x->----+ 6
Limit((3*csc(2*x))/4, x, (5*pi)/6)
/3*csc(2*x)\ lim |----------| 5*pi \ 4 / x->----+ 6
___ -\/ 3 ------- 2
= -0.866025403784439
/3*csc(2*x)\ lim |----------| 5*pi \ 4 / x->----- 6
___ -\/ 3 ------- 2
= -0.866025403784439
= -0.866025403784439