Respostas
respondido por:
3
.............................|\C
.............................|..\
................x...........|....\.......9
.............................|......\
.............................|.......\
.........................A.|.........\B=angulo 65graus
................................y
cosB =AB/BC
cos65=y/9
0,42=y/9
y=9x0,42
y=3,78
tgB= AC/AB
tg65=x/3,78
2,14=x/3,78
x=3,78(2,14)
x=8,08
.............................../|C=angulo 60
............................../.|
.....................a...../...|
........................../.....|......b
........................./......|
......................../.......|
................B..../........|A
.......................12\/3
tgC=AB/AC
tg60=12\/3/b
\/3=12\/3/b
\/3b=12\/3
b=12\/3/\/3 . \/3/\/3
b=12x3/3
b=36/3
b=12
cosC=AC/BC
cos60=12/a
1/2 = 12/a
a=12x2
a=24
.
.............................|..\
................x...........|....\.......9
.............................|......\
.............................|.......\
.........................A.|.........\B=angulo 65graus
................................y
cosB =AB/BC
cos65=y/9
0,42=y/9
y=9x0,42
y=3,78
tgB= AC/AB
tg65=x/3,78
2,14=x/3,78
x=3,78(2,14)
x=8,08
.............................../|C=angulo 60
............................../.|
.....................a...../...|
........................../.....|......b
........................./......|
......................../.......|
................B..../........|A
.......................12\/3
tgC=AB/AC
tg60=12\/3/b
\/3=12\/3/b
\/3b=12\/3
b=12\/3/\/3 . \/3/\/3
b=12x3/3
b=36/3
b=12
cosC=AC/BC
cos60=12/a
1/2 = 12/a
a=12x2
a=24
.
Perguntas similares
6 anos atrás
6 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás