Trigonometri Kelas XI
Matematika
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Pertanyaan
Trigonometri Kelas XI
1 Jawaban
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1. Jawaban pakkrw
tg x = a
sin x/cos x = a
sinx = a.cosx
sin 2x = 2 sinx.cosx
= 2. a.cosx. cosx
= 2a cos^2 x