Przyprostokatna =y
Przyprostokatna =y-4
tgα=3/4
(y-4)/y =3/4
4(y-4)=3y
4y-16=3y
4y-3y=16
y=16cm
to 16-4=12
Pole Δ
P=½·16·12=½·192=96 cm² :)
(x+4)/x =3/44x=3(x+4)4x=3x+12 |- 3x4x-3x=12x=12P=1/2x(x+4)P=0,5*12*16P=96
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Przyprostokatna =y
Przyprostokatna =y-4
tgα=3/4
(y-4)/y =3/4
4(y-4)=3y
4y-16=3y
4y-3y=16
y=16cm
to 16-4=12
Pole Δ
P=½·16·12=½·192=96 cm² :)
(x+4)/x =3/4
4x=3(x+4)
4x=3x+12 |- 3x
4x-3x=12
x=12
P=1/2x(x+4)
P=0,5*12*16
P=96