cos alfa ( 1 - tg alfa ) = cos alfa - sin alfa
Matematika
phinul17
Pertanyaan
cos alfa ( 1 - tg alfa ) = cos alfa - sin alfa
1 Jawaban
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1. Jawaban Robinn
Cosx (1-tanx) = cosx - sinx
Cosx - cosxtanx = cosx - sinx
Cosx - cosx(sinx/cosx) = cosx - sinx
Cosx - sinx = cosx - sinx
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