1. Use a sum or difference identity to find an exact value for sin 759. B i U Font Family 2. Using the double angle identity, which of the following are equivalent to cos O cost 27 - sin [2x O 1 - 2 sin |2x T O 2 sin 14 cos 14 2 cos' 14 - 1 3. Which of the following are equivalent to sin 31 cos 10 - cos 31 sin 109? O sin 41 O cos41 O sin 219 O cos 2194. If sin[/.I: +52) = 0.8 and sin[r.s; yj = 0.35, what is the value of rounded to the nearest hundredth? O 0.23 O 1.15 O 0.90 O 0.45 5. Prove the identity below. Show all steps of your reasoning to receive full credit. { ,\" 3 _ 1 551le + ; COSX 5. If cos (9005 39 sin 65in 39 = 2 cos2 06 1, then the value of a is