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senx+cosx secx+cscx
1
senx = cosx
senx+cosx 1 + 1
cosx senx
1
cosx medios por medios y extremos por extremos
senx = senx+cosx
senx+cosx cosx senx
senx = cosx senx cosx multiplica y divide a la vez
senx+cosx cosx(senx+cosx) lo cancelamos
senx = senx
senx+cosx senx+cosx