используем формулы приведения
1) 5sin(π- π/4) - 2соs(π+π/4)=
5sin( π/4) - (-2соs(π/4))=5√2/2+2√2/2=3.5√2
2) cos (π+π/3)tg(π-π/4)=-cos (π/3)(-tg(π/4))=0.5*1=0.5
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Answers & Comments
используем формулы приведения
1) 5sin(π- π/4) - 2соs(π+π/4)=
5sin( π/4) - (-2соs(π/4))=5√2/2+2√2/2=3.5√2
2) cos (π+π/3)tg(π-π/4)=-cos (π/3)(-tg(π/4))=0.5*1=0.5