bryanmcmillianjr
12.12.2019 •
Mathematics
Use the fundamental identities to simplify the expression.
3tan(-x)cosx
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Ответ:
tan(-x) = -tan(x)
tan(x) = sin(x)/cos(x)
which allows us to say...
3*tan(-x)*cos(x)
3*(-tan(x))*cos(x)
-3*tan(x)*cos(x)
-3*(sin(x)/cos(x))*cos(x)
-3sin(x)
The final answer is -3sin(x)
Ответ:
pls write in English so I can help you