Question

1. sinx = 0;


2. 2tg3x = 0;


3. 2cosx = 1;


4. 2sin(2x – 4π) =−√;


5. cos22x = 2;


6. 1 – sin2x = 0;


7. 2cos2x -5cosx – 3 = 0;


8. 3sin2x + 7cosx – 3 = 0;


9. 2tg23x – 3tg3x + 1 = 0;


10.(1 – cos2x)(сtg(-2x) +√3 ) = 0.