tolong dijawab beserta caranya ya

Bab Trigonometri
Matematika SMA Kelas X

(sin 120° + sin 150°) / (cos 330° + cos 240°)
= (1/2 √3 + 1/2) / (1/2 √3 - 1/2)
= 1/2 (√3 + 1) / (1/2 (√3 - 1))
= (√3 + 1) / (√3 - 1)
= (√3² + 2 . √3 . 1 + 1²) / (3 - 1)
= (3 + 2√3 + 1)/2
= 2 + √3

◎◎ B ◎◎