1)
sin(π - π/6) = sin(π/6) = 0,5;
tg(π/2 + π/4) = - ctg(π/4) = - 1;
sin(π - π/6)*tg(π/2 + π/4) = 0,5*(- 1) = - 0,5
2)
sin(π/2 - π/4) = cos(π/4) = √2/2;
cos(3π/2 - π/4) = - sin(π/4) = - √2/2;
tg(π - π/6) = - tg(π/6) = - √3;
sin(π/2 - π/4)*cos(3π/2 - π/4)*tg(π - π/6) = (√2/2)*(- √2/2)*(- √3) = √3/2