Odpowiedź:
a = 1 b = 3
c² = 1² + 3² = 10 ⇒ c = [tex]\sqrt{10}[/tex]
Mamy tg α = [tex]\frac{b}{a} = 3[/tex]
sin α = [tex]\frac{b}{c} = \frac{3}{\sqrt{10} } = \frac{3\sqrt{10} }{10}[/tex]
cos α = [tex]\frac{a}{c} = \frac{1}{\sqrt{10} } = \frac{\sqrt{10} }{10}[/tex]
ctg α = [tex]\frac{a}{b} = \frac{1}{3}[/tex]
Szczegółowe wyjaśnienie:
Narysuj Δ prostokątny .
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Odpowiedź:
a = 1 b = 3
c² = 1² + 3² = 10 ⇒ c = [tex]\sqrt{10}[/tex]
Mamy tg α = [tex]\frac{b}{a} = 3[/tex]
sin α = [tex]\frac{b}{c} = \frac{3}{\sqrt{10} } = \frac{3\sqrt{10} }{10}[/tex]
cos α = [tex]\frac{a}{c} = \frac{1}{\sqrt{10} } = \frac{\sqrt{10} }{10}[/tex]
ctg α = [tex]\frac{a}{b} = \frac{1}{3}[/tex]
Szczegółowe wyjaśnienie:
Narysuj Δ prostokątny .