Unit 6B Exam ReviewHello! I hope you are having a good day. Just show the work through a picture, please. I'd appreciate it a lot if the work is neat and organized. Thank you! :)

Use sum and difference identities to find the exact value of each. 1) cos 750 13x 2) sin 12 4) cos -750 3) sin - _ 12 13TC 5) tan- 6) tan 12 12 tan 278 - tan 980 7) 19 19 8) cos -COS + sir 1 + tan 278 tan 980 sin 18 36 18 36 9) sin 154 cos 64 - cos 154'sin 640 4 TC 10) sin - 4 TT 9 -cos + COS 18 9 sin 18 11) cos 29n 7 1 9 + sin 18 sin 12) cos 109 cos 190 + sin 109 sin 190 18 9 Find the exact value of each. 13) sin 0= - - where 180 s 0