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Mihail64
@Mihail64
July 2022
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Нужно решение с 1 по 5 задание, можно кратко
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Answers & Comments
cubyek32
#1
a) -sin (2п/3) = -
;
б)
;
в) 0 - 1 = -1 ;
г) - ctg(п/3)*tg(п/3) - cosп*sinп = -1 - 0 = -1 ;
д) 0 + sinп - ctg (90°+45°) = 0 + 0 - tg 45° = -1 ;
#2
-tg²t +
= - tg²t +
= - tg²t + tg²t + 1 = 1;
#3
a) t =
* п/3 + пk, k∈z
b) п/2 + t =
* п/6 + пk
t =
* п/6 + п/2 + пk, k∈z
1 votes
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Answers & Comments
a) -sin (2п/3) = - ;
б) ;
в) 0 - 1 = -1 ;
г) - ctg(п/3)*tg(п/3) - cosп*sinп = -1 - 0 = -1 ;
д) 0 + sinп - ctg (90°+45°) = 0 + 0 - tg 45° = -1 ;
#2
-tg²t + = - tg²t + = - tg²t + tg²t + 1 = 1;
#3
a) t = * п/3 + пk, k∈z
b) п/2 + t = * п/6 + пk
t = * п/6 + п/2 + пk, k∈z