5 3元 1.) If cos(0): = and 2 <0≤2л, find the exact values of sin (0) and sin (20) using identities (without using inverse trigonometry or a picture/SOHCAHTOA). Om The DELL

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Q: 2) Use double-angle formulas to help you prove the identity below. sin (20) 1+ cos (20) tan 0

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Q: 10. Find the exact values of the other four trigonometric functions of if cos 0 = = and sin 8=- 12…

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