Himpunan penyelesaian dari persamaan berikut adalah .... (2 Points) \( \cos 3 x=\frac{1}{2} \sqrt{3} \) untuk \( 0^{\circ} \leq x \leq 360^{\circ} \) A. \( \left\{10^{\circ}, 110^{\circ}, 130^{\circ}, 260^{\circ}, 280^{\circ}, 350^{\circ}\right\} \) B. \( \left\{10^{\circ}, 110^{\circ}, 130^{\circ}, 230^{\circ}, 250^{\circ}, 350^{\circ}\right\} \) C. \( \left\{110^{\circ}, 130^{\circ}, 230^{\circ}, 280^{\circ}, 310^{\circ}, 350^{\circ}\right\} \) D. \( \left\{110^{\circ}, 230^{\circ}, 260^{\circ}, 290^{\circ}, 310^{\circ}, 350^{\circ}\right\} \) E. \( \left\{130^{\circ}, 230^{\circ}, 250^{\circ}, 290^{\circ}, 320^{\circ}, 350^{\circ}\right\} \)

(c) \( \sin (\pi+x)+\cos \left(\frac{\pi}{2}-x\right)+\tan \left(\frac{\pi}{2}+x\right)+\tan \left(\frac{3 \pi}{2}-x\right) \)

In \( \triangle \mathrm{TUV}, u=750 \mathrm{~cm}, m \angle \mathrm{~T}=105^{\circ} \) and \( m \angle \mathrm{U}=42^{\circ} \). Find the length of \( t \), to the nearest centimeter.

In \( \triangle \mathrm{GHI}, g=9.6 \) inches, \( m \angle \mathrm{I}=80^{\circ} \) and \( m \angle \mathrm{G}=15^{\circ} \). Find the length of \( h \), to the nearest 10th of an inch.

In \( \triangle \mathrm{IJK}, k=1.9 \) inches, \( m \angle \mathrm{~J}=59^{\circ} \) and \( m \angle \mathrm{~K}=18^{\circ} \). Find the length of \( j \), to the nearest 10 th of an inch.

In \( \triangle \mathrm{EFG}, f=400 \) inches, \( m \angle \mathrm{~F}=94^{\circ} \) and \( m \angle \mathrm{G}=33^{\circ} \). Find the length of \( g \), to the nearest 10th of an inch.