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sin 2 2x trig identity
sin 2 x trig identity
sin 2x cos 2x 1 trig identity
trig identities for sin 2x
sin x+1 trig identity
sin 3 x trig identity
trig identity cos 2x-sin 2x
sin 2t trig identity
trigonometric identity of sin 2x
trig identities sin 2 x
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