(3sin(90+34)-cos(180-34)-2cos34)/(cos49cos15+cos(90-41)cos(90-15))=
=(3cos34+cos34-2cos34)/(cos49cos15+sin49sin15)=2cos34/cos(49-15)=
=2cos34/cos34=2
5*5-3*6=25-18=7
легко ведь
<span>3 x <span>√3 / <span>√3 x <span>√3 = <span>√3</span></span></span></span></span>
<span><span><span><span><span>так как тройки уничтожаются</span></span></span></span></span>
Фото/////////////////////////////////////////