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March 30, 2017

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cos^(2) 20 degrees + sin^(2) 20 degrees +pi/2

  • trig - ,

    cos^(2) 20 degrees + sin^(2) 20 degrees +pi/2
    = (cos^(2) 20 degrees + sin^(2) 20 degrees) +pi/2
    = 1 + π/2

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