Soal identitas trigonometri
Buktikan
A. Sin B/cosB-cosB/sinB=2 sin kuarat B-1/sin B cos B
..tolong bantu jawab ya,
Buktikan
A. Sin B/cosB-cosB/sinB=2 sin kuarat B-1/sin B cos B
..tolong bantu jawab ya,
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(sin B/cos B) - (cos B/sin B)
= (sin² B - cos² B)/(sin B . cos B)
= (sin² B - (1 - sin² B)/(sin B . cos B)
= (sin² B - 1 + sin² B)/(sin B . cos B)
= (2 sin² B - 1)/(sin B . cos B)
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