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March 30, 2017

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Find the exact value of sin(arctan2/5)

  • Calc - ,

    Draw a right triangle with the long leg horizontal.
    Label the vertical side 2, the horizontal leg 5.
    Calculate the hypotenuse by Pythagoras theorem: √(5^2+2^2)=√29
    therefore
    Sin(θ)=2/√29

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