Wiedzac ze tg x + ctg x = 4 Oblicz: a.) |tg α − ctg α|
|tg α − ctg α| = tg^2α - 2tgαctgα + ctg^2α = (tgα + ctgα)^2 -4tgαctgα =
16 - 4 = 12 = x^2 = 2
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|tg α − ctg α| = tg^2α - 2tgαctgα + ctg^2α = (tgα + ctgα)^2 -4tgαctgα =
16 - 4 = 12 = x^2 = 2