Question: Show how to simplify 13. (a) Show how to simplify (sin 8 + cos @)' - sin(20). Show work. (b) Complete the identity. (sin d

Show how to simplify

13. (a) Show how to simplify (sin 8 + cos @)' - sin(20). Show work. (b) Complete the identity. (sin d + cos @)- - sin(20) = ? A 1 B. 2 sin 8 (cos 0- 1) C. cos 8 (2 sin 8 + cos e) D. 1 -2 sin e

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