Решите тригонометрические уравнения: __________________________

3 sinX =2
cosX tg 3X =0
sin 4X cosX tg 2X =0
5sin(квадрат)X + 3sinXcosX-3cos(квадрат)X =2
2cos(квадрат)x+sin2X =2
Решите сколько сможете, пожалуйста.
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