Sin17п/6 +cos14п/3 -tg13п/4 пожайлуста

Question

Sin17п/6 +cos14п/3 -tg13п/4 пожайлуста

Answer 1

Sin(17π/6)+cos(14π/3)-tg(13π/4)=sin(18π/6-π/6)+cos(12π/3+2π/3)-tg(12π/4+π/4)=sin(3π-π/6)+cos(4π+2π/3)-tg(3π+π/4)=sin(π/6)-cos(2π/3)-tg(π/4)=1/2+(-1/2)-1=-1