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&line2=\mathrm{Solution:\:}0 "sin(pi/2 2)")
sin(pi/2 2)
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Trigonometry Angles--Pi/2 -- from Wolfram MathWorld
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plotting - Why is Mathematica converting Sin(x + pi/2) to Cos(x)? - Mathematica Stack Exchange
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&line2=\mathrm{Solution:\:}\frac{\sqrt{3}}{2} "sin(pi/2-pi/6)")
sin(pi/2-pi/6)
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