Решите уравнение : 2sin 2x + ^3=0 . cos(-x/3)=^2/2. - вопрос №22303224133432172897366 от Gfykfyj 08.03.2021 05:12

Question

Алгебра: Решите уравнение : 2sin 2x + ^3=0 . cos(-x/3)=^2/2. tg(4x-1)=^3/3. sin(4-3x/2)=-1. ctg(-7x)=-1

Gfykfyj · Answer

cos(-x/3)=^2/2.-x/3=+-π/4+2πnx=+-3π/4+6πntg(4x-1)=^3/3.4x-1=π/6+πn4x=1+π/6+πnx=1/4+π/24+πn/4sin(4-3x/2)=-1.4-3x/2=-π/2+2πn-3x/2=-4-π/2+2πnx=8/3+π/3+2πn/3ctg(-7x)=-1-7x=3π/4+πnx=-3π/28+πn/7...