Respuesta:
Explicación paso a paso:
Recuerda esta identidad:
(1 +- cosx)/senx = senx/(1 -+cosx)
Cosx/(1+-senx) = (1 -+ Senx)/ cosx
Resolviendo:
E = (1-cosx)/senx + senx/(1-cosx)
E = (1-cosx)/senx + (1+cosx)/senx
E = ( 1 - cosx + 1 + cosx)/senx
E = 2/senx
E = 2Cscx
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Respuesta:
Explicación paso a paso:
Recuerda esta identidad:
(1 +- cosx)/senx = senx/(1 -+cosx)
Cosx/(1+-senx) = (1 -+ Senx)/ cosx
Resolviendo:
E = (1-cosx)/senx + senx/(1-cosx)
E = (1-cosx)/senx + (1+cosx)/senx
E = ( 1 - cosx + 1 + cosx)/senx
E = 2/senx
E = 2Cscx