Pertanyaan

Tentukan panjang sisi yang ditunjukkan oleh huruf pada setiap gambar di bawah. e.

Tentukan panjang sisi yang ditunjukkan oleh huruf pada setiap gambar di bawah.

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Klaim

D. Enty

Master Teacher

Jawaban terverifikasi

Pembahasan

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell angle c end cell equals cell 180 degree minus 60 degree minus 90 degree space end cell row blank equals cell 30 degree space end cell row cell fraction numerator c over denominator sin space angle c end fraction end cell equals cell fraction numerator a over denominator sin space angle a end fraction space end cell row cell fraction numerator 5 over denominator sin space 30 end fraction end cell equals cell fraction numerator a over denominator sin space 90 end fraction space end cell row cell fraction numerator 5 over denominator begin display style 1 half end style end fraction end cell equals cell a over 1 space end cell row a equals cell 10 space end cell row cell fraction numerator b over denominator sin space angle b end fraction end cell equals cell fraction numerator a over denominator sin space angle a end fraction space end cell row cell fraction numerator b over denominator sin space 60 end fraction end cell equals cell fraction numerator 10 over denominator sin space 90 end fraction space end cell row cell fraction numerator b over denominator begin display style 1 half square root of 3 end style end fraction end cell equals cell 10 over 1 space end cell row b equals cell 5 square root of 3 end cell end table end style$