QUESTION 6 . 1 POINT By expressing the product as a sum, 8sin (2a)sin a =...

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math trigonometry

Answer 1

Answer #1

8 sin (20) Sin (8) = 4x2 sin (2x), sin(a) =4[cos (22-0) - cos (22 +00) 24 ( cos3x) cosa = 4 cost - 4 cos 3a ** 2 sin A sinB =

Answer 2

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