45/ Sin(-25пи/6) Сos( 23пи/3)
45/-sin (4пи+пи/6)*cos(6пи+пи+2пи/3)= -45/sin пи/6*cos (пи+(пи/2+пи/6)= -45/sin пи/6*(-соs (пи/2+пи/6)= -45/sin пи/6*sin пи/6= -45/sin^2 пи/6= -45:(1/2)^2=-45:1/4= -45*4= -180.