Odpowiedź:
najpierw obliczę x , skorzystam z Twierdzenia Pitagorasa
x^2 = 12^2 + 5^2
x^2 = 144 + 25
x^2 = 169
x^2 = 13^2 ,x>0
x = 13
sin alfa = 5/13
cos alfa = 12/13
tg alfa = 5/12
ctg alfa = 12/5 = 2 2/5 = 2,4
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Odpowiedź:
najpierw obliczę x , skorzystam z Twierdzenia Pitagorasa
x^2 = 12^2 + 5^2
x^2 = 144 + 25
x^2 = 169
x^2 = 13^2 ,x>0
x = 13
sin alfa = 5/13
cos alfa = 12/13
tg alfa = 5/12
ctg alfa = 12/5 = 2 2/5 = 2,4