Ответ:
tg^2x-4tgx+3=0
tgx=t
t^2-4t+3=0
t1=1,t1=3
tgx1=1
x1=π/4+πn,n€Z
x2=arctg3+πn,n€Z
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Ответ:
tg^2x-4tgx+3=0
tgx=t
t^2-4t+3=0
t1=1,t1=3
tgx1=1
x1=π/4+πn,n€Z
x2=arctg3+πn,n€Z