PEMBAHASAN
Identitas :
sin² x + cos² x = 1
sin 2x = 2 sin x cos x
cos 2x = 1 - 2 sin² x
cos 2x = cos² x - sin² x
tan x = sin x/cos x
sec x = 1/cos x
Jawaban pada lampiran_
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PEMBAHASAN
Identitas :
sin² x + cos² x = 1
sin 2x = 2 sin x cos x
cos 2x = 1 - 2 sin² x
cos 2x = cos² x - sin² x
tan x = sin x/cos x
sec x = 1/cos x
Jawaban pada lampiran_