(sqrt(3)cosx+3sinx)/sinx=2sqrt(3)(1/2cosx+sqrt(3)/2sinx)/sinx=
=2sqrt(3)(sin30cosx+cos30sinx)/sinx=2sqrt(3)sin(30+x)/sinx; ответ 3)
(sqrt(3)cosx+3sinx)/sinx=2sqrt(3)(1/2cosx+sqrt(3)/2sinx)/sinx=
=2sqrt(3)(sin30cosx+cos30sinx)/sinx=2sqrt(3)sin(30+x)/sinx; ответ 3)