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OpenStudy (chris215):
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Nnesha (nnesha):
sec^2 theta = what ? look at the identities :-)
Nnesha (nnesha):
yeah
Nnesha (nnesha):
sec^2x= 1+ tan^2x here are http://prntscr.com/77xqcf trig identities so replace sec^2x by 1+tan^2x
OpenStudy (anonymous):
-tag2x+sec2x=1 -(senx+cosx)2+(1/cosx)2=1 -(sen2x/cos2x)+(1/cos2x)=1 -sen2x+1/cos2x=1 -sen2x+1=cos2x Cos2x+sen2x=1 pythagorean
Nnesha (nnesha):
it is not that hard just 2 step :-)
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