1)2cos0° + 3tg45° - sin120° = 2•1 + 3•1 - sin60° = 5 - √3/2 = (10 - √3)/2.
2)sin270+3tg180=sin(180+90)+3tg180=sin(pi+pi/+3tg(pi)=sin(3pi/2)+3tg(pi)=-1+0=1
3)хз
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1)2cos0° + 3tg45° - sin120° = 2•1 + 3•1 - sin60° = 5 - √3/2 = (10 - √3)/2.
2)sin270+3tg180=sin(180+90)+3tg180=sin(pi+pi/+3tg(pi)=sin(3pi/2)+3tg(pi)=-1+0=1
3)хз
р2р2р2рдуд3дулду2зщ3щ22щщ