Pls bantuin asdfghjkl​

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Pls bantuin asdfghjkl​

Pls bantuin asdfghjkl​

Jawaban:
tan 6x = tan 108°, sehingga diperoleh :

6x = 108° + k . 180°

x = 18° + k . 30°

k = 0 → x = 18° + 0° = 18°

k = 1 → x = 18° + 30° = 48°

k = 2 → x = 18° + 60° = 78°

k = 3 → x = 18° + 90° = 108°

k = 4 → x = 18° + 120° = 138°

k = 5 → x = 18° + 150° = 168°

k = 6 → x = 18° + 180° = 198°

k = 7 → x = 18° + 210° = 228°

k = 8 → x = 18° + 140° = 258°

k = 9 → x = 18° + 270° = 288°

k = 10 → x = 18° + 300° = 318°

k = 11 → x = 18° + 330° = 348°

k = 12 → x = 18° + 360° = 378°

  (Tidak Memenuhi)

Jadi himpunan penyelesaiannya adalah {18°, 48°, 78°, 108°, 138°, 168°, 198°, 228°, 258°, 288°, 318°, 348°}