Question: 4. (15 pts.) Rewrite the angle 0 as a sum of difference of 2 angles commonly marked on the unit circle. Then use the sum

4. (15 pts.) Rewrite the angle 0 as a sum of

4. (15 pts.) Rewrite the angle 0 as a sum of difference of 2 angles commonly marked on the unit circle. Then use the sum or difference formula to find sine and cosine of 0. 0 = 165 or - 12 5. (15 pts.) Use the given conditions to find the exact values of sin 20 and cos 20. 3TC 12 COS 0 = TT

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