zadanie
x do potegi 3 -3x do potegi 2 +5x-15=0 jedna z przyprostokatnych trojkata prostokatnego ma dlugosc 8 a preciw prostokatna 10 oblicz miary jego katow ostrych
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x³-3x²+5x-15=0
x²(x-3)+5(x-3)=0
(x²+5)(x-3)=0
x=3
a=8
c=10
α=kąt ostry
sinα=8/10=0,8
α≈54⁰
β=90-54≈36⁰