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OpenStudy (anonymous):
Which of the following is an identity? A. cosx(2sinx+1)=0 B.(tanx+cotx)(sinxcosx)=1 C.sin^(2)x=4-2cos^(2)x D.secxtanx-cosxcotx=sinx
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OpenStudy (anonymous):
B.(tanx+cotx)(sinxcosx)=1
OpenStudy (anonymous):
Thank you!
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