1.Решите уравнения 
а)√2cos4x=1 
б)sin2x-cosx=0 
в)2cos^2x-sinx=-1
г)sinx/1-cosx=0 
д)tgx/2=
√3 
е)cos(x+
[tex] \pi [/tex]/6)-1=0
ж)sinx/4*cosx/4=-1/4
з)2cos^2x-5cosx+2=0 
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