Use the Given Function Value(s), and Trigonometric Identities (Including the Cofunction

question 188

Multiple Choice

Use the given function value(s) , and trigonometric identities (including the cofunction identities) , to find the indicated trigonometric functions.
$\cos \beta = \frac { \sqrt { 5 } } { 4 }$ $\sec \beta \text { and } \sin \left( 90 ^ { \circ } - \beta \right)$

---

Definitions:

Bloodstream

The bloodstream is the system of blood vessels (arteries, veins, and capillaries) through which blood circulates throughout the body, delivering oxygen and nutrients to tissues and removing waste products.

Pituitary

A pea-sized gland located at the base of the brain, often called the "master gland," because it regulates vital body functions and the activity of other glands.

Hypothalamus

An area located beneath the thalamus in the brain responsible for managing the autonomic nervous system and pituitary gland functions, overseeing the regulation of body temperature, hunger, thirst, and various other systems that maintain equilibrium in the body.

Endocrine Glands

Glands of the endocrine system that release hormones directly into the bloodstream to regulate various bodily functions.