wzory trygonometryczne

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Question		Answer
sin(α+β) start learning		sinαcosβ+sinβcosα
sin(α−β) start learning		sinαcosβ−sinβcosα
cos(α+β) start learning		cosαcosβ−sinαsinβ
tg(α+β) start learning		tgα+tgβ/1-tgαtgβ
ctg(α-β) start learning		ctgαctgβ+1/ctgβ-ctgα
ctg(α+β) start learning		ctgαctgβ-1/ctgα+ctgβ
tg(α-β) start learning		tgα+tgβ/1-tgαtgβ
tg(α+β) start learning		tgα+tgβ/1-tgαtgβ
cos(α-β) start learning		cosαcosβ+sinαsinβ
tg(α-β) start learning		tgα-tgβ/1+tgαtgβ
sin2α start learning		2sinαcosα
cos2α start learning		cos^2α−sin^2α
tg2α start learning		tg2α/1-tg^2α
ctg2α start learning		ctg^2α-1/2ctgα
sinα+sinβ start learning		2sin(α+β)/2*cos(α-β)/2
cosα+cosβ start learning		2cos(α+β)/2*cos(α-β)/2
sinα-sinβ start learning		2sin(α-β)/2*cos(α+β)/2
cosα-cosβ start learning		-2sin(α-β) 2*sin(α+β)/2

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