If cost = -0.42 and cosw = -0.80, both t and w are positive, and the angles determined by t and w are in quadrant 3, then which of the following statements is true? (2 points) a. t > w b. w > t c. cannot be determined

The answer is A. 

You can use the inverse cosine feature on a scientific calculator to figure out w and t, or you can understand that cosine in the third quadrant will get closer to 0 as the angle increases, therefore t's angle will be bigger than w's since it's value (-.42) is closer to zero than (-.8)