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OpenStudy (anonymous):
solve the trigonometric equation... tan(x+π) + 2sin(x+π)=0
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OpenStudy (anonymous):
in which interval?
OpenStudy (anonymous):
just general
OpenStudy (anonymous):
u=x+π tanu+2sinu=0 (sinu/cosu)+2sinu=0 ((2cosu+1)sinu)/cosu)=0 (2cosu+1)sinu=0 2cosu+1=0 ____ cosu=-0.5 u=(2/3)π+2kπ or u=(-2/3)π+2kπ or sinu=0 u=kπ
OpenStudy (anonymous):
thank you!
OpenStudy (anonymous):
welcome
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