Sin240+ctg45

Question

Sin240+ctg45

Answer 1

sin240+ctg45=sin(180+60)+ctg45=-sin60+ctg45=-(корень3)/2+1=(2-(корень3))/2

Answer 2

sin240+ctg45=sin(60+180)+ctg45=sin60cos180+cos60sin180+ctg45=(√3/2)*(-1)+(1/2)*(0)+1=1-√3/2