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Polar Coordinates, Parametric Equations

Polar Coordinates, Parametric Equations

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2 ≈ 1.4142 and y = (−2)sin(π/4) = − √ 2. This makes it very easy to convert equations from rectangular to polar coordinates. EXAMPLE 10.1.3 Find the equation of the line y = 3x+ 2 in polar coordinates. We merely substitute: rsinθ = 3rcosθ + 2, or r = 2 sinθ −3cosθ. EXAMPLE 10.1.4 Find the equation of the circle (x − 1/2)2 + y2 ...

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