mindy006
mindy006
18-07-2017
Mathematics
contestada
Prove the identity
cos(-x)/[1+sin(-x)]=secx+tanx
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Аноним
Аноним
18-07-2017
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
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