Решение и ответ на фотогиафии
0.6+(0.5у - 1) = у+0.5
0.6+0.5у-1=у+0.5
0.5у-у= 0.5+1-0.6
-0.5у=1.9
у= 1.9: (-0.5)
у= -3.8
arctg (-1)-arctg 1=3pi/4-pi/4=2pi/4=pi/2
arcsin( -1)-arccos (-<span>√2/2)=3pi/2-3pi/4=6pi/4-3pi/4=3pi/4</span>
<span>arcsin (-1/2)-arctg 1/<span>√3=7pi/6-pi/6=6pi/6=pi</span></span>
<span><span>arcsin 1+arcctg <span>√3=pi/2+pi/3=3pi/6+2pi/6=5pi/6</span></span></span>