Реши уравнения

1. \(\dfrac{1}{\sin x}+\dfrac{1}{\sin \left( x-\dfrac{3\pi}{2} \right)}=4\sin \left( x+\dfrac{5\pi}{4} \right)\) ;

2. \(\dfrac{1}{\cos x}+\dfrac{1}{\cos \left( x-\dfrac{3\pi}{2} \right)}=4\cos \left( \dfrac{7\pi}{4}-x \right)\) .

Ответ:

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2. [ ],[ ], \(n\in \Z\) .