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F. Ayudhita

Master Teacher

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah A.

jawaban yang tepat adalah A.

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Pembahasan

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Ingat! Perhatikan perhitungan berikut! Dengan demikian, diperoleh perhitungan berikut. Jadi, jawaban yang tepat adalah A.

Ingat!

begin mathsize 14px style tan invisible function application a equals fraction numerator sin invisible function application a over denominator cos invisible function application a end fraction cot invisible function application a equals fraction numerator 1 over denominator tan invisible function application a end fraction equals fraction numerator cos invisible function application a over denominator sin invisible function application a end fraction end style 

Perhatikan perhitungan berikut!

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell sin invisible function application 45 degree end cell equals cell 1 half square root of 2 end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell cos invisible function application 135 degree end cell equals cell negative cos invisible function application open parentheses 180 degree minus 45 degree close parentheses end cell row blank equals cell negative cos invisible function application 45 degree end cell row blank equals cell negative 1 half square root of 2 end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell tan invisible function application 60 degree end cell equals cell fraction numerator sin invisible function application 60 degree over denominator cos invisible function application 60 degree end fraction end cell row blank equals cell fraction numerator 1 half square root of 3 blank over denominator 1 half end fraction end cell row blank equals cell square root of 3 end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell sin invisible function application 225 degree end cell equals cell negative sin invisible function application open parentheses 180 degree plus 45 degree close parentheses end cell row blank equals cell negative sin invisible function application 45 degree end cell row blank equals cell negative 1 half square root of 2 end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell cos invisible function application 150 degree end cell equals cell negative cos invisible function application open parentheses 180 degree minus 30 degree close parentheses end cell row blank equals cell negative cos invisible function application 30 degree end cell row blank equals cell negative 1 half square root of 3 end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell cot invisible function application 120 degree end cell equals cell negative cot invisible function application open parentheses 180 degree minus 60 degree close parentheses end cell row blank equals cell negative cot invisible function application 60 degree end cell row blank equals cell negative fraction numerator cos invisible function application 60 degree over denominator sin invisible function application 60 degree end fraction end cell row blank equals cell negative fraction numerator 1 half over denominator 1 half square root of 3 end fraction end cell row blank equals cell negative fraction numerator 1 over denominator square root of 3 end fraction end cell end table end style 

Dengan demikian, diperoleh perhitungan berikut.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator sin invisible function application 45 degree cos invisible function application 135 degree tan invisible function application 60 degree over denominator sin invisible function application 225 degree cos invisible function application 150 degree cot invisible function application 120 degree end fraction end cell equals cell fraction numerator open parentheses 1 half square root of 2 close parentheses open parentheses negative 1 half square root of 2 close parentheses open parentheses square root of 3 close parentheses over denominator open parentheses negative 1 half square root of 2 close parentheses open parentheses negative 1 half square root of 3 close parentheses open parentheses negative fraction numerator 1 over denominator square root of 3 end fraction close parentheses end fraction end cell row blank equals cell open parentheses square root of 2 close parentheses open parentheses square root of 3 close parentheses end cell row blank equals cell square root of 6 blank end cell end table end style 

Jadi, jawaban yang tepat adalah A.

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