Iklan

Iklan

Pertanyaan

Perhatikan gambar berikut. Hitunglah hasil dari sin B + cos B .

Perhatikan gambar berikut.

Hitunglah hasil dari  

 

  1.  

  2.  

Iklan

F. Ayudhita

Master Teacher

Jawaban terverifikasi

Iklan

Pembahasan

Pembahasan
lock

Dengan menggunakan aturan sinus Perbandingan trigonometri Denganpythagoras maka Jadi

Dengan menggunakan aturan sinus

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator B C over denominator sin space straight A end fraction end cell equals cell fraction numerator A C over denominator sin space straight B end fraction end cell row cell fraction numerator 3 over denominator sin space 60 to the power of ring operator end fraction end cell equals cell fraction numerator a over denominator sin space straight B end fraction end cell row cell fraction numerator 3 over denominator begin display style 1 half square root of 3 end style end fraction end cell equals cell fraction numerator a over denominator sin space straight B end fraction end cell row cell 3 times sin space straight B end cell equals cell 1 half straight a square root of 3 end cell row cell sin space straight B end cell equals cell 1 over 6 straight a square root of 3 end cell end table end style

Perbandingan trigonometri begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank sin end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight B end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell fraction numerator straight a square root of 3 over denominator 6 end fraction end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell de over mi end cell end table end style

Dengan pythagoras

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell s a end cell equals cell square root of mi squared minus de squared end root end cell row blank equals cell square root of 6 squared minus open parentheses a square root of 3 close parentheses squared end root end cell row blank equals cell square root of 36 minus 3 a squared end root end cell end table end style

maka begin mathsize 14px style cos space straight B equals sa over mi equals fraction numerator square root of 36 minus 3 straight a squared end root over denominator 6 end fraction equals 1 over 6 square root of 36 minus 3 straight a squared end root end style

Jadi

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell sin space straight B plus cos space straight B end cell equals cell 1 over 6 straight a square root of 3 plus 1 over 6 square root of 36 minus 3 straight a squared end root end cell row blank equals cell 1 over 6 open parentheses straight a square root of 3 plus square root of 36 minus 3 straight a squared end root close parentheses end cell end table end style

Latihan Bab

Konsep Kilat

Derajat dan Radian

Perbandingan Sisi (Trigonometri)

Sudut Istimewa (Trigonometri)

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

50

Iklan

Iklan

Pertanyaan serupa

Diketahui segitiga KLM dengan panjang sisi LM=10cm , KM=4 3 ​ cm , dan besar ∠ K = 6 0 ∘ . Tentukan cos L .

5rb+

4.3

Jawaban terverifikasi

Iklan

Iklan

RUANGGURU HQ

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

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Fitur Roboguru

Topik Roboguru

Hubungi Kami

Ruangguru WhatsApp

081578200000

Email info@ruangguru.com

info@ruangguru.com

Contact 02140008000

02140008000

Ikuti Kami

©2023 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia