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NataliaYalovec
@NataliaYalovec
July 2022
1
22
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Вычислите 2(cos^2 p/8 -sin^2 p/8)
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ариа111111
Cos²α-sin²α=cos2α
2cos2p/8=2cosp/4=√2
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2cos2p/8=2cosp/4=√2