buktikan cos 2x = 1-2sin^2x minta tolong master master
Matematika
muhriyadi2
Pertanyaan
buktikan
cos 2x = 1-2sin^2x
minta tolong master master
cos 2x = 1-2sin^2x
minta tolong master master
1 Jawaban
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1. Jawaban dharmawan12
cos 2x = 1- 2sin^2x
cos^2 x - sin^2 x =
(1 - sin^2x ) - sin^2,x =
1 - 2sin^2x = 1 - 2sin^2x ( terbukti )