Answer
Blanks in order:
Quadrant
Positive
Negative
Negative
Work Step by Step
Each quadrant determines the sign of the trig function. Furthermore, sin is positive in quadrant II because sin = y and in quadrant II, y is positive. As for cos being negative in quadrant III, cos = x, and x goes towards the left. Lastly, sin is negative in quadrant IV, sin = y, and y goes down (more negative).
