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cos 2x - 2 cos^3 x + sin x = 0
CD 08
sin 3x - can 3 cos 3x = 2 sin 2x
KA07
( 1 + sin^2 x ) cos x + ( 1 + cos ^2 x) sin x = 1 + sin 2x
CD 08
sin 3x - can 3 cos 3x = 2 sin 2x
KA07
( 1 + sin^2 x ) cos x + ( 1 + cos ^2 x) sin x = 1 + sin 2x
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