Tolong Jawab pertanyaan berikut! 4[tex] cos^{4} [/tex] 30° - 3cosec 30° #DenganLangkahCara Makasih^^

Kelas 10 Matematika
Bab Lingkaran

4 . cos⁴ 30° - 3 . cosec 30°
= 4 . (cos 30°)⁴ - 3 . 1/sin 30°
= 4 . (1/2 √3)⁴ - 3 . 1/(1/2)
= 4 . 9/16 - 3 . 2
= 9/4 - 24/4
= -15/4
= - 3 3/4