Roboguru

Pertanyaan

Perhatikan gambar berikut.

Nilai  pada gambar berikut adalah....

  1.  

  2.  

  3.  

  4.  

  5.  

F. Ayudhita

Master Teacher

Jawaban terverifikasi

Pembahasan

Rumus aturan Sinus :

begin mathsize 14px style fraction numerator a over denominator sin open parentheses A close parentheses end fraction equals fraction numerator b over denominator sin left parenthesis B right parenthesis end fraction equals fraction numerator c over denominator sin left parenthesis C right parenthesis end fraction end style 

Sehingga nilai begin mathsize 14px style a end style yaitu :

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator AC over denominator sin space B end fraction end cell equals cell fraction numerator BC over denominator sin space A end fraction end cell row cell fraction numerator a plus 1 over denominator sin space 30 degree end fraction end cell equals cell fraction numerator a minus 1 over denominator sin space 45 degree end fraction end cell row cell fraction numerator a plus 1 over denominator 1 half end fraction end cell equals cell fraction numerator a minus 1 over denominator 1 half square root of 2 end fraction end cell row cell square root of 2 blank open parentheses a plus 1 close parentheses end cell equals cell a minus 1 end cell row cell square root of 2 a plus square root of 2 end cell equals cell a minus 1 end cell row cell square root of 2 a minus a end cell equals cell negative 1 minus square root of 2 end cell row cell a open parentheses square root of 2 minus 1 close parentheses end cell equals cell negative 1 minus square root of 2 end cell row a equals cell fraction numerator negative 1 minus square root of 2 over denominator square root of 2 minus 1 end fraction end cell row a equals cell fraction numerator negative 1 minus square root of 2 over denominator square root of 2 minus 1 end fraction cross times fraction numerator square root of 2 plus 1 over denominator square root of 2 plus 1 end fraction end cell row a equals cell fraction numerator negative square root of 2 minus 1 minus 2 minus square root of 2 over denominator 2 plus square root of 2 minus square root of 2 minus 1 end fraction end cell row a equals cell negative 3 minus 2 square root of 2 end cell end table end style 

maka jawaban yang benar adalah E

31

0.0 (0 rating)

Pertanyaan serupa

Jika grafik fungsi  digeser ke kanan sejauh 60∘, maka didapatkan grafik fungsi ....

12

0.0

Jawaban terverifikasi

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ruangguru WhatsApp

081578200000

Email info@ruangguru.com

info@ruangguru.com

Contact 02140008000

02140008000

Ikuti Kami

©2022 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia