Penjelasan dengan langkah-langkah:
trigonometri
cos (k.2π) = 1
k bilangan bulat
16π cos (28π)
= 16π cos (14 × 2π)
= 16π . 1
= 16π
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Penjelasan dengan langkah-langkah:
trigonometri
cos (k.2π) = 1
k bilangan bulat
16π cos (28π)
= 16π cos (14 × 2π)
= 16π . 1
= 16π