March 30, 2017

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Find the cartesian coordinates of the following points given in polar coordinates.

b. (2 rt2, 3pi/4)

I cant figure this one out

  • Calc - ,

    I don't know what they call the radius 2 rt2.
    Whatever the polar-coordinate radius is, multiply it by cos 3pi/4 to get x and sin 3pi/4 to get y.

    cos 3pi/4 = cos 135 degrees = -1/(sqrt 2)
    sin 3pi/4 = sin 135 degrees = 1/(sqrt 2)

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