Answer:
either of two angles whose sum is 90°
The image of the dilation is shown below, with the centre of dilation (0,0) and scale factor of 3
The coordinate of C' is (6, -3) which is three times of the coordinate of C(2, -1)
The answer is D. It's always Rise over Run. So the slope would be 2/1 Or 2.
In Quadrant III, tangent is positive; both sine and cosine are negative. A helpful acronym for each quadrant is All Students Take Calculus (All positive in I, Sine in II, Tangent in III, Cosine in IV).