Treść w zalaczniku. Daje naj :)
sina=V3/4
cos^a=1-sin^
cos^=1-(V3/4)^
cos^=1-3/16
cos^=13/16
cos=V13/4
tg=sina/cosa
tga=V3/4 / V13/4
tga=V3/V13
tga=V39/13
ctga=V13/4 / V3/4
ctga= V13/V3
ctga=V39/3; V-pierwiastek, ^- potęga 2
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sina=V3/4
cos^a=1-sin^
cos^=1-(V3/4)^
cos^=1-3/16
cos^=13/16
cos=V13/4
tg=sina/cosa
tga=V3/4 / V13/4
tga=V3/V13
tga=V39/13
ctga=V13/4 / V3/4
ctga= V13/V3
ctga=V39/3; V-pierwiastek, ^- potęga 2