A High Fountain of Water Is in the Center of a Circular

question 46

Multiple Choice

A high fountain of water is in the center of a circular pool of water.You walk the circumference of the pool and measure it to be 150 meters.You then stand at the edge of the pool and use a protractor to gauge the angle of elevation of the top of the fountain.It is 55 $\degree$ .How high is the fountain?

• A)17 m
• B)23 m
• C)29 m
• D)34 m

---

Definitions:

Nicotinic Acetylcholine Receptor

A type of receptor found in the nervous system that responds to the neurotransmitter acetylcholine, playing a key role in muscle contraction and many other physiological functions.

Upregulation

The process of increasing the quantity or activity of a molecular component, often referring to gene expression or protein levels in cell biology.

Downregulation

The process by which a cell decreases the quantity of a cellular component, such as RNA or protein, in response to an external variable.

Withdrawal

The process or experience of stopping or reducing the use of a psychoactive substance, often leading to uncomfortable symptoms.