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Sin2 π₯ 4 β cos2 π₯ 4 = sin ( π 2 + π₯). Cos(2Ο-x)-sin(3Ο/2+x)=1. Cos(2Ο-x) +sin(Ο/2+x) =β2. 2cos 4 2 Ο cos sin3 sin 3 4 x x x x ο¦ οΆ ο ο½ ο« ο§ ο· ο« ο¨ οΈ.
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ΠΡΠ°Π΄ΡΡΡ Π² Ο
2sin Ο x sin Ο2 x sinx
Ξ 2 7Ο 2
Cos2 x Ο 2
2sin x 2 Ο 3 3
Sin 4 7 Ο
Sin Ο x sin x 2Ο
Cos2 Ο x
Ctg Ο 6
ΠΡΡΠΈΡΠ»ΠΈΡΡ sin Ο 4
Sin2 π₯ 4 β cos2 π₯ 4 = sin ( π 2 + π₯). Cos(2Ο-x)-sin(3Ο/2+x)=1. Cos(2Ο-x) +sin(Ο/2+x) =β2. 2cos 4 2 Ο cos sin3 sin 3 4 x x x x ο¦ οΆ ο ο½ ο« ο§ ο· ο« ο¨ οΈ. 