Buktikan identitas trigonometri berikut ini..Sin D cos D sec D csc D = 1
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Buktikan identitas trigonometri berikut ini..Sin D cos D sec D csc D = 1
1 Jawaban
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1. Jawaban Robinn
[ D = x ]
sinx . cosx . secx . cscx = 1
sinx . cosx . (1/cosx) . (1/sinx) = 1
sinx(1/sinx) . cosx(1/cosx) = 1
1 . 1 = 1
1 = 1