January 2019 1 28 Report
Rozwiąż zadania z trygonometrii:
zad.1:
Rozwiąż równania:
a)|2sin3x-3|=4
b)sin2xcosx-sinxcos2x=- \frac{\sqrt{2}}{2}
c)cos3xcosx=1-sin3xsinx
d) 4tgcos ^{2} x
e) \sqrt{2} sinx-2cos ^{2} =0
f) 3cosx=3cos ^{2} x-2sin ^{2} x cosx
g) \sqrt{3}cos2x+9cosx+4 \sqrt{3} =0

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