In order to receive credit, work must be shown. 1. Solve 4cos x - 3= 0 for principal values in degrees. 2. Solve 2sin2x + sinx - 1 = 0 for principal values in radians. 3. Solve cos2x = cosx over [0, 360) 4. Solve sin2x - sinx + 1 = cos2x over [0, 2nt). 5. Solve cot x - cscx = 1 over [0, 21)