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Sebuah vektor garis sepanjang 3 m membentuk sudut 21 0 o dari sumbu X positif. Gambarkan penguraian vektor tersebut!

Sebuah vektor garis sepanjang 3 m membentuk sudut  dari sumbu X positif. Gambarkan penguraian vektor tersebut!

  1. ...space 

  2. ...undefined 

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S. Syifa

Master Teacher

Jawaban terverifikasi

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Pembahasan

Pembahasan
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maka komponen sumbu x: dan komponen sumbu y:

begin mathsize 14px style V equals 3 space straight m alpha equals 210 to the power of straight o  sin space alpha equals sin space 210 to the power of straight o sin space alpha equals sin space left parenthesis 180 to the power of straight o plus 30 to the power of straight o right parenthesis sin space alpha equals negative sin space 30 to the power of straight o sin space alpha equals negative 1 half  cos space alpha equals cos space 210 to the power of straight o cos space alpha equals cos space left parenthesis 180 to the power of straight o plus 30 to the power of straight o right parenthesis cos space alpha equals negative cos space 30 to the power of straight o cos space straight alpha equals negative 1 half square root of 3 end style 

maka komponen sumbu x:

begin mathsize 14px style V with rightwards arrow on top subscript x equals V space cos space alpha V with rightwards arrow on top subscript x equals 3 cross times open parentheses 1 half square root of 3 close parentheses V with rightwards arrow on top subscript x equals negative 1 comma 5 square root of 3 space straight m end style 

dan komponen sumbu y:

begin mathsize 14px style V with rightwards arrow on top subscript y equals V space sin space alpha V with rightwards arrow on top subscript y equals 3 cross times open parentheses negative 1 half close parentheses V with rightwards arrow on top subscript y equals negative 1 comma 5 space straight m end style

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Diberikan gambar vektor seperti berikut. Tentukan - A - B !

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5.0

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