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Pertanyaan

Nyatakan dalam jumlah atau selisih sinus. g. 2 cos ( 4 1 ​ π + x ) sin ( 4 1 ​ π − x )

Nyatakan dalam jumlah atau selisih sinus.

g.  

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W. Lestari

Master Teacher

Mahasiswa/Alumni Universitas Sriwijaya

Jawaban terverifikasi

Jawaban

.

 table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 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 cos 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 cell open parentheses 1 fourth straight pi plus straight x close parentheses end cell 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 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 cell open parentheses 1 fourth straight pi minus straight x close parentheses 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 1 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table 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 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank x end table.

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Pembahasan

Ingat kembali: Maka: Jadi, .

Ingat kembali:

2 space cos space straight alpha space sin space straight beta equals sin space open parentheses straight alpha plus straight beta close parentheses minus sin space open parentheses straight alpha minus straight beta close parentheses 

Maka:

begin mathsize 12px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 space cos space open parentheses 1 fourth straight pi plus straight x close parentheses space sin space open parentheses 1 fourth straight pi minus straight x close parentheses end cell equals cell sin space open parentheses open parentheses 1 fourth straight pi plus straight x close parentheses plus open parentheses 1 fourth straight pi minus straight x close parentheses close parentheses minus sin space open parentheses open parentheses 1 fourth straight pi plus straight x close parentheses minus open parentheses 1 fourth straight pi minus straight x close parentheses close parentheses end cell row blank equals cell sin space open parentheses 1 fourth straight pi up diagonal strike plus straight x end strike plus 1 fourth straight pi up diagonal strike negative straight x end strike close parentheses minus sin space open parentheses up diagonal strike 1 fourth straight pi end strike plus straight x up diagonal strike negative 1 fourth straight pi end strike plus straight x close parentheses end cell row blank equals cell sin space open parentheses 2 over 4 straight pi close parentheses minus sin space 2 x end cell row blank equals cell sin space 90 degree minus sin space 2 x end cell row blank equals cell 1 minus sin space 2 x end cell end table end style 

Jadi, table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 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 cos 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 cell open parentheses 1 fourth straight pi plus straight x close parentheses end cell 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 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 cell open parentheses 1 fourth straight pi minus straight x close parentheses 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 1 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table 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 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank x end table.

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