continuity

If f(a) = tan (x) , what is lim tan(x) , lim tan(x) , and f(#)? Isf (ac ) continuous at " ? 0 0o, -oo, not defined, continuous at f( ) 0 - 00, oo, not defined, not continuous at f( 0 0o, -00, -00, continuous at f( ? ) O wo, -00, oo, not continuous at f( ?)