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YulianaAleksandrovna
@YulianaAleksandrovna
August 2022
1
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Докажите тождество:
cos^4t+sin^4t=1-(1/2)sin^2*2t
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InteligentGame
Cos^4t+sin^4t=(cos^4t+cos^2t*sin^2t+sin^4t)-2cos^2t*sin^2t=(sin^2t+cos^2t)^2-1/2(2cost*sint)^2=1-1/2sin^2*2t
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