Question

AYUDA!!!! es para hoy!

Answer 1

Explicación paso a paso:

1/((1/sen A)+(cosA/senA))+1/((cos A/senA)-(1/sen A))

=1/((1+cos A)/sen A)+1/((cos A-1)/sen A)

=(sen A)/(1+cos A)+(sen A)/(cos A-1)

=(sen A(cos A-1))+(sen A(1+cos A))/(cos A-1)(cosA+1)

=senAcosA-senA+senA+senAcosA/(cos^2 A-1)

=2senAcosA/(1-sen^2 A-1)

=2senAcosA/-sen^2 A

=-2cos A/sin A

=-2ctg A