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JuliSkvortsova
@JuliSkvortsova
July 2022
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ПОМОГИТЕ, КТО ЧЕМ МОЖЕТ!
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salima100
1) = -sin(2п/3)= - sin(п -п/3) = -sin(п/3) =
-
(
√3) / 2
2)tg7п/6 = tg(п + п/6) = tg(п/6) = √(3)/3
3) cosп/2 - ctg(5п/4) = 0 - ctg(п + п/4) = - ctg(п/4) = -1
4) = - сtg(п/3)*tg(п/3) - cos(п)*sin(п) = -1 - 0 = -1
5)= 0 + sin(180+360) - сtg (180-45) = 1
2 votes
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Answers & Comments
2)tg7п/6 = tg(п + п/6) = tg(п/6) = √(3)/3
3) cosп/2 - ctg(5п/4) = 0 - ctg(п + п/4) = - ctg(п/4) = -1
4) = - сtg(п/3)*tg(п/3) - cos(п)*sin(п) = -1 - 0 = -1
5)= 0 + sin(180+360) - сtg (180-45) = 1