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Pertanyaan

sin 3 0 o . cos 4 5 o sin 4 5 o . cos 3 0 o ​ = ....

  1. square root of 3

  2. 1 half square root of 3

  3. 1 third square root of 3

  4. square root of 2

  5. 1 half square root of 2

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N. Rahayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

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Pembahasan

fraction numerator sin space 45 to the power of o space space. space space cos space 30 to the power of o over denominator sin space 30 to the power of o space space. space cos space 45 to the power of o end fraction equals fraction numerator begin display style 1 half end style square root of 2 space. begin display style 1 half end style square root of 3 over denominator begin display style 1 half end style space. begin display style 1 half end style square root of 2 end fraction equals fraction numerator begin display style 1 fourth end style square root of 2 square root of 3 over denominator begin display style 1 fourth end style square root of 2 end fraction equals fraction numerator horizontal strike begin display style 1 fourth end style square root of 2 end strike square root of 3 over denominator horizontal strike begin display style 1 fourth end style square root of 2 end strike end fraction equals square root of 3

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Tsabita Ayuni Susanti

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cos 2 30 o – sin 2 135 o + 8 sin 45 o cos 135 o = ....

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