Write a vertical line as a polar equation

The video tutorial explains how to solve for X using trigonometric functions. It begins by introducing the problem and replacing X with R cosine of Theta. The instructor then demonstrates how to solve for R by dividing by cosine of Theta, leading to the understanding that this is equivalent to multiplying by secant of Theta. The tutorial concludes with a recap of the solution and key points.

How is four times secant of Theta related to cosine?

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What should you remember about the relationship between cosine and secant?

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