101 Essays That Will Change The Way You Think

101 Essays That Will Change The Way You Think

Matematika Tolong banget ya kan

Tolong banget ya kan

Jawaban:

4.

Sin 30⁰ = CD / AC

1/2 = 6 / A

AC = 6 / ½

AC = 12

Tan 30⁰ = CB / AC

⅓√3 = CB / 12

CB = ⅓√3 x 12

CB = 4√3

AB = √(AC² + CB²)

AB = √(12² + (4√3)²)

AB =√(144 + 16x3)

AB = √192

AB = 8√3

Luas = ½ x 8√3 x 6 = 24√3

5.

Sin 45⁰ = BC / √72

½√2 = BC / 6√2

BC = ½√2 x 6√2

BC = 6

sin 30⁰ = BC / AC

½ = 6 /AC

AC = 6 / ½

AC = 12