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OpenStudy (anonymous):
how do you verify cosxsecx=1 ?
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OpenStudy (mathstudent55):
\( \sec x = \dfrac{1}{\cos x} \)
OpenStudy (anonymous):
secx=1/cosx cosx*1/cosx =1
OpenStudy (mathstudent55):
Use the identity above for sec x.
OpenStudy (anonymous):
thanks , you guys are the best :)
OpenStudy (mathstudent55):
wlcm
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