Sin60° × cos 30° + cos 60° × sin 30°

sin 60 x cos 30 + cos 60 x sin 30
= ½√3 x ½√3 + ½ x ½
= 3/4 + 1/4
= 4/4 = 1

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Kelas 10 Matematika
Bab Trigonometri

sin 60° . cos 30° + cos 60° . sin 30°
= sin (60° + 30°)
= sin 90°
= 1