Question: Is my answer correct? Express the sum or difference as a product of sines and/or cosines. sin (20) - sin (40) A. 2 sin (30)

Is my answer correct?

Express the sum or difference as a product of sines and/or cosines. sin (20) - sin (40) A. 2 sin (30) cos 0 O B. 2 cos (20) cos (30) O C. - 2 sin 0 O D. - 2 sin 0 cos (30)
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