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Tunjukkan bahwa begin mathsize 14px style fraction numerator sin space open parentheses 180 degree minus straight A close parentheses over denominator sin space open parentheses 180 degree plus straight A close parentheses end fraction times fraction numerator cotan space open parentheses 90 degree minus straight A close parentheses over denominator tan space open parentheses 90 degree plus straight A close parentheses end fraction times fraction numerator cos space open parentheses 360 degree minus straight A close parentheses over denominator sin space open parentheses negative straight A close parentheses end fraction equals sin space straight A end style.

S. Indah

Master Teacher

Mahasiswa/Alumni Universitas Lampung

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table attributes columnalign right center left columnspacing 0px end attributes row cell sin space left parenthesis 180 minus x right parenthesis end cell equals cell sin space x end cell row cell sin left parenthesis 180 plus x right parenthesis end cell equals cell negative sin space x end cell row cell c o tan left parenthesis 90 minus x right parenthesis end cell equals cell tan space x end cell row cell tan space left parenthesis 90 plus x right parenthesis end cell equals cell negative c o tan space x end cell row cell cos left parenthesis 360 minus x right parenthesis end cell equals cell cos space x end cell end table

Sehingga,

 fraction numerator sin space open parentheses 180 minus straight A close parentheses over denominator sin space open parentheses 180 plus straight A close parentheses end fraction times fraction numerator cotan space open parentheses 90 degree minus straight A close parentheses over denominator tan space open parentheses 90 plus straight A close parentheses end fraction times fraction numerator cos space open parentheses 360 minus straight A close parentheses over denominator sin space open parentheses negative straight A close parentheses end fraction equals fraction numerator sin space straight A over denominator negative sin space straight A end fraction times fraction numerator tan space straight A over denominator negative cotan space straight A end fraction times fraction numerator cos space straight A over denominator negative sin space straight A end fraction equals negative 1 times negative fraction numerator tan space straight A over denominator cotan space straight A end fraction times negative cotan space straight A equals negative tan space straight A

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Nyatakan dalam bentuk yang paling sederhana. b. cos(90∘+A)+sin(180∘−A)−sin(180∘+A)−sin(−A).

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