sin750°+tg585°=sin(360°*2+30°)+tg(-360°-225°)=sin30°-tg(225°)=
sin30°-tg(180°+45°)=0.5-tg45°=0.5-1=-0.5
sin750°+tg585°=sin(360°*2+30°)+tg(-360°-225°)=sin30°-tg(225°)=
sin30°-tg(180°+45°)=0.5-tg45°=0.5-1=-0.5