Conic Sections in Polar Coordinates
1 Define Conics in Terms $$r = \frac { 9 } { 3 - 3 \cos \theta }$$

question 219

Multiple Choice

Conic Sections in Polar Coordinates
1 Define Conics in Terms of a Focus and a Directrix
- $$r = \frac { 9 } { 3 - 3 \cos \theta }$$

• A) parabola; The directrix is 3 unit(s) to the left of the pole at \(x = - 3\).
• B) parabola; The directrix is 3 unit(s) to the right of the pole at \(x = 3\).
• C) parabola; The directrix is 3 unit(s) above the pole at \(y = 3\).
• D) parabola; The directrix is 3 units below the pole at \(\mathrm { y } = - 3\).

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Definitions:

Place Principle

A theory in auditory perception that suggests different parts of the cochlea are activated by different frequencies of sound, contributing to the perception of pitch.

Absolute Pitch

Absolute Pitch is the rare ability to identify or produce a musical note without any reference point or external aid, often referred to as perfect pitch.

Musical Instruments

Devices constructed or used for the purpose of making musical sounds.

Substance P

A neuropeptide involved in pain perception and the inflammatory response within the body.