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Jika tan squared space straight x space minus 1 space equals space straight p cubed space, maka nilai cos squared space straight x adalah...

  1. straight p cubed plus 2

  2. fraction numerator 2 over denominator straight p cubed plus 2 end fraction

  3. fraction numerator 1 over denominator straight p cubed plus 2 end fraction

  4. fraction numerator 2 over denominator straight p cubed minus 2 end fraction

  5. fraction numerator 1 over denominator straight p cubed minus 2 end fraction

H. Nufus

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

Jawaban terverifikasi

Pembahasan

tan squared space straight x space minus space 1 space equals space straight p cubed  fraction numerator sin squared straight x over denominator cos squared straight x end fraction minus space 1 space equals space straight p cubed  fraction numerator sin squared straight x over denominator cos squared straight x end fraction equals space straight p cubed space plus space 1  fraction numerator 1 minus cos squared straight x over denominator cos squared straight x end fraction equals straight p cubed space plus space 1  1 minus cos squared straight x space equals space straight p cubed space cos squared straight x plus cos squared straight x  1 equals straight p cubed space cos squared straight x plus cos squared straight x space plus space cos squared straight x  1 equals straight p cubed space cos squared straight x plus 2 cos squared straight x space  1 equals left parenthesis straight p cubed plus 2 right parenthesis cos squared straight x  cos squared straight x equals fraction numerator 1 over denominator straight p cubed plus 2 end fraction

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