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castortr0y [4]
4 years ago
6

Cos 4x=1-8sin²x + 8 sin^4x

Mathematics
1 answer:
Ivahew [28]4 years ago
4 0
The result is
x=2πn+π
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Fifteen years later, a man will be two times as old as he was 15 years ago. How old is he now?
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Step-by-step explanation:

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