i have a study guide for a quiz tomorrow, but i am not sure how to solve a few of the problems and feel pretty unprepared. it would be great if anyone could help me with these:

use the interval (0, 2 pi)

1. 2sin^2(theta)-sin(theta) = 1

2.(3cot^3)x-cotx= Square root of 3

3. (2sin^2)2theta = 1

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1. (2cos^2)2x-cos2x-1 in radians

2. (12sin^2)x-5sinx-2 for the interval (0,360) in degrees

(im not sure exactly what the last two are asking for you to do, so hopefully someone recognizes it)

thank you (Happy)