In the complex plane, the rectangular coordinates (x, y) represent a complex number. Which statement explains why polar coordinates (r, θ) represent the same complex number?

In the complex plane the rectangular coordinates x y represent a complex number Which statement explains why polar coordinates r θ represent the same complex nu class=

Respuesta :

Answer:

Option (2)

Step-by-step explanation:

From the picture attached,

Let the rectangular coordinates (x, y) is represented by the polar coordinates (r, θ).

By applying Pythagoras theorem in ΔPAO,

PO² = AO² + AP²

r² = x² + y²

r = [tex]\sqrt{x^2+y^2}[/tex]

By applying tangent rule in ΔAPO,

tanθ = [tex]\frac{AP}{OA}[/tex]

tanθ = [tex]\frac{y}{x}[/tex]

θ = [tex]\text{tan}^{-1}(\frac{y}{x})[/tex]

Therefore, Option 2 will be the correct option.

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