Question

determine o valor de a e c

Answer 1

Sen 30¤ = 18/a

1/2 = 18/a

a = 18 x 2

a = 36

Tg 30¤ = 18/c

\/3 / 3 = 18 / c

\/3.c = 18 x 3

\/3.c = 54

c = 54
......___
.......\/3

c = 54 . \/3
......___...___
.......\/3......\/3

c = 54.\/3
......_____
...........3

c = 18.\/3