ACT Question: If the value, to the nearest thousandth, of cos theta is -0.385, which of the following could be true about theta?
a.) theta is greater than or equal to 0 and less than pi/6
b.) theta is greater than or equal to pi/6 and less than pi/3
c.) theta is greater than or equal to pi/3 and less than pi/2
d.) theta is greater than or equal to pi/2 and less than 2pi/3
e.) theta is greater than or equal to 2pi/3 and less than or equal to pi

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If the cosine of an angle is negative, then the angle is in either the second or third quadrant.

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