September 2018 1 36 Report
Me ayudan a resolver estos ejercicios;
a) Cosx(cscx-secx)=cotx-1
b) (1+tan2x)cos2x=1
C) sec4x-tan4x=1-2sec2x
d) 1-senxcosxtanx=cos2x
e) 1-2sen2x=2cos2x-1
F) cos2x-sen2x=2cos2x-1

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