Oblicz sin alfa i tg alfa jeśli sin (90 st -alfa)=0,28
jeśli sin alfa = 28/100 (przyprostokątne/przeciwprostokątna)
to:
100^{2} - 28^{2} = x^{2}
10000 - 784 = x^{2}
x = 96
tg alfa = 28/96
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jeśli sin alfa = 28/100 (przyprostokątne/przeciwprostokątna)
to:
100^{2} - 28^{2} = x^{2}
10000 - 784 = x^{2}
x = 96
tg alfa = 28/96