Pertanyaan

Tentukan panjang AB berikut.

K. Prameswari

Master Teacher

Mahasiswa/Alumni Universitas Gadjah Mada

Jawaban terverifikasi

Jawaban

panjang .

panjang

Pembahasan

Berdasarkan aturan trigonometri, diperoleh Jadi, panjang .

Berdasarkan aturan trigonometri, diperoleh

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell cos open parentheses 30 degree close parentheses end cell equals cell fraction numerator sisi space samping over denominator sisi space miring end fraction end cell row cell 1 half square root of 3 end cell equals cell AB over BC end cell row cell 1 half square root of 3 end cell equals cell fraction numerator AB over denominator 10 square root of 3 end fraction end cell row cell 1 half square root of 3 cross times 10 square root of 3 end cell equals cell fraction numerator AB over denominator 10 square root of 3 end fraction cross times 10 square root of 3 end cell row 15 equals AB end table end style$

Jadi, panjang .