Iklan

Iklan

Pertanyaan

a = 2 i − 2 j ​ + k dan b = 2 i + 3 j ​ + 6 k , hitunglah besar sudut antara a dan b .

, hitunglah besar sudut antara .

Iklan

R. Bella

Master Teacher

Mahasiswa/Alumni UIN Syarif Hidayatullah Jakarta

Jawaban terverifikasi

Jawaban

besar sudut antara adalah .

 besar sudut antara a with rightwards arrow on top space dan space b with rightwards arrow on top adalah 79.02 degree.

Iklan

Pembahasan

Besar sudut antara didapatkan: Jadi,besar sudut antara adalah .

Besar sudut antara a with rightwards arrow on top space dan space b with rightwards arrow on top didapatkan:

table attributes columnalign right center left columnspacing 0px end attributes row cell cos space alpha end cell equals cell fraction numerator a with rightwards arrow on top times b with rightwards arrow on top over denominator open vertical bar a with rightwards arrow on top close vertical bar open vertical bar b with rightwards arrow on top close vertical bar end fraction end cell row cell cos space alpha end cell equals cell fraction numerator open parentheses table row 2 row cell negative 2 end cell row 1 end table close parentheses times open parentheses table row 2 row 3 row 6 end table close parentheses over denominator square root of 2 squared plus open parentheses negative 2 close parentheses squared plus 1 squared end root space square root of 2 squared plus 3 squared plus 6 squared end root end fraction end cell row cell cos space alpha end cell equals cell fraction numerator 4 plus open parentheses negative 6 close parentheses plus 6 over denominator square root of 9 space square root of 49 end fraction end cell row cell cos space alpha end cell equals cell fraction numerator 4 over denominator open parentheses 3 close parentheses open parentheses 7 close parentheses end fraction end cell row cell cos space alpha end cell equals cell 4 over 21 end cell row alpha equals cell equals space 79.02 degree end cell end table  

Jadi, besar sudut antara a with rightwards arrow on top space dan space b with rightwards arrow on top adalah 79.02 degree.

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

44

Iklan

Iklan

Pertanyaan serupa

Diketahui vektor u = ⎝ ⎛ ​ 2 − 1 1 ​ ⎠ ⎞ ​ dan v → = ⎝ ⎛ ​ 7 0 1 ​ ⎠ ⎞ ​ . Tentukan sudut antara u dan v .

2

5.0

Jawaban terverifikasi

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

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia