BackConvert Equations Between Polar and Rectangular Forms definitions
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1/15BackSkip to main contentBackRectangular Form
An equation format using x and y variables, commonly representing Cartesian coordinates in the plane. Polar Form
An equation format using r and theta, representing points based on distance from the origin and angle from the positive x-axis. r
The distance from the origin to a point in the polar coordinate system. Theta
The angle measured from the positive x-axis to a point in the polar coordinate system. r Cosine Theta
An expression equivalent to the x-coordinate in rectangular form when converting between coordinate systems. r Sine Theta
An expression equivalent to the y-coordinate in rectangular form when converting between coordinate systems. r Squared
An expression representing the sum of the squares of x and y, or the squared distance from the origin. Cosecant Theta
The reciprocal of sine theta, often used when expressing polar equations with y in rectangular form. Secant Theta
The reciprocal of cosine theta, used in polar equations to facilitate conversion to rectangular form. Completing the Square
An algebraic technique used to rewrite quadratic equations, often to identify conic sections like circles. Standard Form
A recognizable equation format, such as x squared plus y squared equals a constant, that reveals the graph's shape. Circle
A set of points equidistant from a center, represented by equations like x squared plus y squared equals a constant. Graph Shape
The geometric figure represented by an equation, such as a line or circle, after conversion between forms. Algebraic Manipulation
The process of rearranging and transforming equations to facilitate conversion between coordinate systems. Trigonometric Function
A mathematical function like sine, cosine, or their reciprocals, used to relate polar and rectangular variables.
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