Podziele kazdy wyraz przez sinα
(1+cosα/sinα)/(1-cosα/sinα)=(1+ctgα)/(1-ctgα)
(1+5)/(1-5)=-6/4=-1,5
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Podziele kazdy wyraz przez sinα
(1+cosα/sinα)/(1-cosα/sinα)=(1+ctgα)/(1-ctgα)
(1+5)/(1-5)=-6/4=-1,5