Question: Show that sin 0 cos 40 = + cos (20) - 16 32 -cos (40) - 16 -cos(60). 32

Show thatsin 0 cos 40 = + cos (20) - 16 32 -cos

sin 0 cos 40 = + cos (20) - 16 32 -cos (40) - 16 -cos(60). 32

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