tunjukan cos b + sin b . tan b = sec b !
Matematika
Aqshal11111
Pertanyaan
tunjukan cos b + sin b . tan b = sec b !
1 Jawaban
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1. Jawaban abyandaffa11
cos b + sin b . sin b/cos b = sec b
cos^2 b + sin^2b / cos b = sec b
1 / cos b = sec b
sec b = sec b (Terbukti)