Ответы на вопрос:
5arcsin√3/2=5*π/3=5π/3 4arcsin1/2=4*π/6=2π/3 3arctg(-1/√3)=3*(-π/6)=-π/3 5arcsin√3/2+4arcsin1/2-3arctg(-1/√3)=5π/3+2π/3+π/3=8π/3 cos(x-π/5)≤√2/2 π/4+2πn≤x-π/5≤7π/4+2πn 9π/20+2πn≤x≤39π/20+2πn x∈[9π/20+2πn; 39π/20+2πn]
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