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# 7.3E: Unit Circle (Exercises)

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30. Find the exact value of $$\sin \frac{\pi}{3}$$.

31. Find the exact value of $$\cos \frac{\pi}{4}$$

32. Find the exact value of $$\cos \pi$$.

33. State the reference angle for $$300^{\circ}$$.

34. State the reference angle for $$\frac{3 \pi}{4}$$.

35. Compute cosine of $$330^{\circ}$$.

36. Compute sine of $$\frac{5 \pi}{4}$$.

37. State the domain of the sine and cosine functions.

38. State the range of the sine and cosine functions.

7.3E: Unit Circle (Exercises) is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by OpenStax via source content that was edited to conform to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.