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liyaru
@liyaru
December 2021
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Решите, пожалуйста:
1) 2sin(pi/4)*cos(pi/4 - x) = √2
2) sinx*sin7x = sin3x*sin5x (не используя формулы тройного угла)
3) sin^2(2x - pi/4) + cos^2(5x/2 + pi/4) = 1
4) 2sin(90° + x)*cos4x = cos3x
5) cosx - 2√3sin^x = cos3x
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