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Chapter 10: Problem 5

What is the polar equation of the vertical line \(x=5 ?\)

Short Answer

Expert verified
Question: Convert the given Cartesian equation of a vertical line, \(x=5\), into a polar equation. Answer: The polar equation representing the same vertical line is \(r = \frac{5}{\cos(\theta)}\).

Step by step solution

01

Given Cartesian Equation

The given equation in Cartesian coordinates is \(x=5\).
02

Convert to Polar Coordinates

To convert the Cartesian equation to a polar equation, we will use the conversion formulas: \(x = r \cos(\theta), y = r \sin(\theta)\). We want to find the polar equation that represents the same vertical line. So we can substitute \(x\) in the given equation with the corresponding polar coordinate expression: $$5 = r \cos(\theta)$$.
03

Solve for 'r'

Now, we need to solve the equation for 'r': $$ r = \frac{5}{\cos(\theta)}$$.
04

Polar Equation

The polar equation representing the same vertical line is: $$ r = \frac{5}{\cos(\theta)}$$.

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