MATERI KELAS X SMA MATEMATIKA tolong jawab nomor 2 C

Trigonometri

sin -180/6
= sin -30
= - sin 30
= - 1/2

csc 180/4
= csc 45
= 2/√2
= √2

cot3/2(180)
= cot 270
= 0

cos 2(180)
= 1

Jadi
hasilnya
= -1/2 + √2 / 0 + 1
= √2 - 1/2