Buktikan pernyataan berikut: (cos x-cos y)/(sin x+sin

Name: Buktikan pernyataan berikut: (cos x-cos y)/(sin x+sin
Uploaded: 2024-02-01T19:52:00
Duration: PT44.5359S
Description: Buktikan pernyataan berikut: (cos x-cos y)/(sin x+sin y)=-tan((x-y)/2)