Buktikan identitas Cos α + tan α sin α =sec α
Matematika
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Pertanyaan
Buktikan identitas Cos α + tan α sin α =sec α
1 Jawaban
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1. Jawaban eripane05
Trigonometri
cos a + tan a sin a
= cos + (sin^2 a / cos a)
= (cos^2 a + sin^2 a ) / cos a
= 1/ cos a
= sec a
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