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begin mathsize 12px style sin invisible function application open parentheses pi over 6 plus x close parentheses cos invisible function application open parentheses pi over 6 minus x close parentheses plus cos invisible function application open parentheses pi over 4 plus x close parentheses sin invisible function application open parentheses pi over 4 minus x close parentheses equals end style ....

  1. begin mathsize 12px style 1 fourth square root of 3 plus 1 half end style 

  2. begin mathsize 12px style 1 fourth square root of 3 plus 1 fourth end style 

  3. begin mathsize 12px style 1 fourth square root of 2 plus 1 half end style 

  4. begin mathsize 12px style 1 fourth square root of 2 plus 1 fourth end style 

  5. begin mathsize 12px style 3 over 4 end style 

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Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah A.

jawaban yang tepat adalah A.

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Pembahasan

Ingat bahwa Sehingga Selanjutnya Sehingga Jadi, jawaban yang tepat adalah A.

Ingat bahwa

begin mathsize 12px style sin invisible function application A cos invisible function application B equals 1 half open parentheses sin invisible function application open parentheses A plus B close parentheses plus sin invisible function application open parentheses A minus B close parentheses close parentheses cos invisible function application A sin invisible function application B equals 1 half open parentheses sin invisible function application open parentheses A plus B close parentheses minus sin invisible function application open parentheses A minus B close parentheses close parentheses end style 

Sehingga

begin mathsize 12px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell sin invisible function application open parentheses pi over 6 plus x close parentheses cos invisible function application open parentheses pi over 6 minus x close parentheses end cell row blank equals cell 1 half open parentheses sin invisible function application open parentheses open parentheses pi over 6 plus x close parentheses plus open parentheses pi over 6 minus x close parentheses close parentheses plus sin invisible function application open parentheses open parentheses pi over 6 plus x close parentheses minus open parentheses pi over 6 minus x close parentheses close parentheses close parentheses end cell row blank equals cell 1 half open parentheses sin invisible function application pi over 3 plus sin invisible function application 2 x close parentheses end cell row blank equals cell 1 half open parentheses 1 half square root of 3 plus sin invisible function application 2 x close parentheses end cell row blank equals cell 1 fourth square root of 3 plus 1 half sin invisible function application 2 x end cell end table end style 

Selanjutnya

begin mathsize 12px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell cos invisible function application open parentheses pi over 4 plus x close parentheses sin invisible function application open parentheses pi over 4 minus x close parentheses end cell row blank equals cell 1 half open parentheses sin invisible function application open parentheses open parentheses pi over 4 plus x close parentheses plus open parentheses pi over 4 minus x close parentheses close parentheses minus sin invisible function application open parentheses open parentheses pi over 4 plus x close parentheses minus open parentheses pi over 4 minus x close parentheses close parentheses close parentheses end cell row blank equals cell 1 half open parentheses sin invisible function application pi over 2 minus sin invisible function application 2 x close parentheses end cell row blank equals cell 1 half open parentheses 1 minus sin invisible function application 2 x close parentheses end cell row blank equals cell 1 half minus 1 half sin invisible function application 2 x end cell row blank blank blank end table end style 

Sehingga

begin mathsize 12px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell sin invisible function application open parentheses pi over 6 plus x close parentheses cos invisible function application open parentheses pi over 6 minus x close parentheses plus cos invisible function application open parentheses pi over 4 plus x close parentheses sin invisible function application open parentheses pi over 4 minus x close parentheses end cell row blank equals cell open parentheses 1 fourth square root of 3 plus 1 half sin invisible function application 2 x close parentheses plus open parentheses 1 half minus 1 half sin invisible function application 2 x close parentheses end cell row blank equals cell 1 fourth square root of 3 plus 1 half end cell end table end style 

Jadi, jawaban yang tepat adalah A.

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