Oblicz wartości pozostałych funkcji trygonometrycznych (sinus, tangens, cotangens), jeśli: cos α = ⅓
cosα = ⅓
1
cos²α= ---
9
sin²α = 1 - cos² α
1 8
sin²a = 1 - --- = ----
9 9
2√2
sinα = -----
3
sinα 2√2 3
tgα = ------ = ----- × ---- = 2√2
cosα 3 1
1 1 √2
ctgα = ----- = --------- = ------
tgα 2√2 4
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cosα = ⅓
1
cos²α= ---
9
sin²α = 1 - cos² α
1 8
sin²a = 1 - --- = ----
9 9
2√2
sinα = -----
3
sinα 2√2 3
tgα = ------ = ----- × ---- = 2√2
cosα 3 1
1 1 √2
ctgα = ----- = --------- = ------
tgα 2√2 4