Two Sides of a Right Triangle ABC (C Is the Right

question 99

Multiple Choice

Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given
angle. Give exact answers with rational denominators.
-Find sec $B$ when $a = 9$ and $b = 5$ .

• A) \(\frac { 9 \sqrt { 106 } } { 106 }\)
• B) \(\frac { \sqrt { 106 } } { 9 }\)
• C) \(\frac { 9 \sqrt { 106 } } { 5 }\)
• D) \(\frac { 5 \sqrt { 106 } } { 106 }\)

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Definitions:

EEG Machine

An EEG Machine (Electroencephalogram Machine) is a medical device used to measure and record the electrical activity of the brain, useful in diagnosing conditions like epilepsy.

REM Sleep

A sleep phase marked by Rapid Eye Movement, where dreaming and increased brain activity occur.

Delta Waves

Slow brain waves typically associated with the deepest stages of sleep and relaxation.

Theta Waves

Brain wave patterns observed in the EEG (Electroencephalogram) that are typically associated with light sleep, meditation, and creativity, having a frequency range of about 4-8 Hz.