This happens whenever the terminal point of
Meanwhile,
since you already know sine is positive. Cosine is positive when the angle lies in the first or fourth quadrant.
Sine and cosine are both positive only when
53. Which of the following diagrams show a pair of corresponding angles?
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This happens whenever the terminal point of
Meanwhile,
since you already know sine is positive. Cosine is positive when the angle lies in the first or fourth quadrant.
Sine and cosine are both positive only when