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Casio FX300MSPLUS2 Scientific 2nd Edition Calculator, with New Sleek Design, Black, 0.4" x 3" x 6.4"
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Using the Sin, Cos and Tan FUNCTINs on the scientific calculator#trigonometry #significantfigures - YouTube
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10 year old Casio scientific calculator that's been through undergrad, grad school, and much more. Still flawless. : r/BuyItForLife
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