Respuestas

2012-09-11T01:43:07+02:00

secX+cscXcotX /sec²X =cotXcscX

(secx+(1/senx)(cosx/senx))/(1/cosx^2)=

=(1/cosx+cosx/senx^2)/(1/cosx^2)

=(senx^2+cosx^2)/(cosx*senx^2*(1/cosx^2))

=1/(senx^2/cosx)

=cosx/senx^2

=(cosx/senx)*(1/senx)

=cotx*cscx