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Roman Numbers 10, 20, 30......1000
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Trigonometry Table.... sin 0 ° = 0 sin 30 ° = 1/2 sin 45 ° = 1/ √2 sin 60 ° = √3/2 sin 90 ° = 1 cos 0 ° = 1 cos 30 ° = √3 ...
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