August 2018 1 80 Report
Rozwiąż równania:
A.
tg²x=tg(3x-π/6)

B.
sin3x=sin(x+π/4)

C.
1+tg²[(π-x)/2]={1+tg[(π-x)/2]}²

D.
√3tg(|x/3|)=1

E.
ctg(|2x|)=1

F.
2cos(|x/3|=-1

G.
tg²x-3=0

H.
cos²3x-1/2cos3x=0

I.
sin²(1/2x)+1=2sin(1/2x)

J.
ctg3x=3ctgx

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