Find the Distance from the Pole to the Directrix $$r = - \frac { 30 } { 15 + 31 \sin \theta }$$

question 75

Multiple Choice

Find the distance from the pole to the directrix for the conic $$r = - \frac { 30 } { 15 + 31 \sin \theta }$$

• A) \(\frac { 30 } { 31 }\)
• B) \(\frac { 31 } { 30 }\)
• C) 30
• D) \(\frac { 31 } { 15 }\)
• E) 62

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Definitions:

Spinal Cord

The cylindrical bundle of nerve fibers and associated tissue that is enclosed in the spine and connects nearly all parts of the body to the brain.

Vertebrae

The individual bones that form the vertebral column (spine) in vertebrates, providing structural support and protecting the spinal cord.

Spinal Column

The flexible, vertical structure composed of vertebrae that encloses the spinal cord, providing support and facilitating movement.

Slight Tension

A minimal level of stress or strain on the muscles or body, which can sometimes be beneficial for health and muscle tone.