4. Sign a) When is sine positive and when is it negative? Answer this question by drawing the unit circle and labeling e

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4 Sign A When Is Sine Positive And When Is It Negative Answer This Question By Drawing The Unit Circle And Labeling E 1 (7.93 KiB) Viewed 31 times

4. Sign a) When is sine positive and when is it negative? Answer this question by drawing the unit circle and labeling each of the four quadrants either (+) or (-). b) Use a new circle to answer the same question for cos 0.