Question: d. Tam DC + Cotx = 2 csc (2x) b. cos(3x) = 4 cos3 x - 3 cos x c. (sin x + cos x)2

d. Tam DC + Cotx = 2 csc (2x) b. cos(3x)

= 4 cos3 x - 3 cos x c. (sin x +

d. Tam DC + Cotx = 2 csc (2x) b. cos(3x) = 4 cos3 x - 3 cos x c. (sin x + cos x)2 = 1 + sin(2x) )2 x 103+ 216

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