The Letters R and θ Represent Polar Coordinates $$\mathrm { r } = 2 ( \sin \theta - \cos \theta )$$

question 117

Multiple Choice

The letters r and θ represent polar coordinates. Write the equation using rectangular coordinates (x, y) .
- $$\mathrm { r } = 2 ( \sin \theta - \cos \theta )$$

• A) \(x ^ { 2 } + y ^ { 2 } = 2 y - 2 x\)
• B) \(x ^ { 2 } + y ^ { 2 } = 2 x - 2 y\)
• C) \(2 x ^ { 2 } + 2 y ^ { 2 } = y - x\)
• D) \(2 x ^ { 2 } + 2 y ^ { 2 } = x - y\)

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Definitions:

Morpheme

The smallest grammatical unit in a language that carries meaning, for example, "s" in dogs to denote plurality.

Phonology

The study of the sound system of languages, including the rules for combining and producing sounds to form meaningful words and sentences.

Letter

A written, typed, or printed communication, typically enclosed in an envelope and sent by mail.

Semantics

The branch of linguistics concerned with the meanings of words, phrases, and sentences, and how interpretation is influenced by context.