\ begin {ecuación}\ left (\ begin {array} {l}\ theta_ {1} (t)\\\ theta_ {2} (t)\ end {array}\ right) =\ left (\ begin {array} {l} 1\\ end {array}\ right)\ operatorname {Re} B e^ {i\ omega_ {0} t =\ le...\ begin {ecuación}\ left (\ begin {array} {l}\ theta_ {1} (t)\\\ theta_ {2} (t)\ end {array}\ right) =\ left (\ begin {array} {l} 1\\ end {array}\ right)\ operatorname {Re} B e^ {i\ omega_ {0} t =\ left (\ begin {array} {l} A\ cos\ left (\ omega_ {0} t+\ delta\ right)\\ A\ cos\ left (\ omega_ {0} t+\ delta\ right)\ end {array}\ right),\ quad B=A e^ {i\ delta}
