Compute the measure of the angle between 0 and 360 degrees swept counterclockwise from 3 o'clock position on the unit circle whose terminal ray intersects the circle at the point with given y-coordinate and in the given quadrant. x=0.5 in Quadrant I.
θ=  degrees   

x=-0.8 in Quadrant II.
θ= degrees   

x=-0.1 in Quadrant III.
θ=  degrees   

x=0.8 in Quadrant IV.
θ=  degrees   

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