9.Narysowana prosta jest styczna do okręgu. Oblicz długość odcinka x. (załącznik) :)
a) x² + 81 = 225
x = 12
b) 12² + y² = 13²
144 + y² =169
y = 5 x=2y x=10
c) 8²+6² = x²
x=10
d) 8²+4²=x²
x= 2√20
1)9^2+x^2=15^2
x^2=225-81
x^2=144
x=12
2)12^2+(1/2 x)^2=13^2
(1/2 x)^2=169-144
(1/2 x)^2=25
1/2x=5|*2
3)6^2+8^2=x^2
x^2=36+64
x^2=100
4)8^2+(1/2*8)^2=x^2
x^2=8^2+4^2
x^2=64+16
x^2=80
x=pierwiastek 80
x=4* pierwiastek 5
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a) x² + 81 = 225
x = 12
b) 12² + y² = 13²
144 + y² =169
y = 5 x=2y x=10
c) 8²+6² = x²
x=10
d) 8²+4²=x²
x= 2√20
1)9^2+x^2=15^2
x^2=225-81
x^2=144
x=12
2)12^2+(1/2 x)^2=13^2
(1/2 x)^2=169-144
(1/2 x)^2=25
1/2x=5|*2
x=10
3)6^2+8^2=x^2
x^2=36+64
x^2=100
x=10
4)8^2+(1/2*8)^2=x^2
x^2=8^2+4^2
x^2=64+16
x^2=80
x=pierwiastek 80
x=4* pierwiastek 5