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Videnie
@Videnie
July 2022
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Помогите!! Известно,что sin t= - 15/17 . пи < t <3 пи/2. вычислите cos t, tg t ,ctg t.
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mikael2
Verified answer
Cost<0 в третьем квадранте.
соst=-√1-sin²t= -√1-15/17²=-√1-225/289= - 8/17
tgt= sint/cost=-15/17:-8/17=15/8
ctgt=1/tgt=8/15
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Answers & Comments
Verified answer
Cost<0 в третьем квадранте.соst=-√1-sin²t= -√1-15/17²=-√1-225/289= - 8/17
tgt= sint/cost=-15/17:-8/17=15/8
ctgt=1/tgt=8/15