Use a Calculator to Find the Value of the Expression $\sec ^ { - 1 } \left( - \frac { 5 } { 4 } \right)$

question 240

Multiple Choice

Use a calculator to find the value of the expression in radian measure rounded to two decimal places.
- $\sec ^ { - 1 } \left( - \frac { 5 } { 4 } \right)$

• A) 143.13
• B) -0.93
• C) 2.50
• D) -53.13

---

Definitions:

Productive Efficiency

A situation where a firm or economy produces output at the lowest possible cost, using all its resources efficiently.

Pure Competition

A market structure characterized by a large number of small firms, a homogenous product, and very easy entry and exit from the market.

Spillovers

Effects of an economic activity that impact third parties who are not directly involved in the activity, potentially leading to externalities.

Marginal Cost

The added cost incurred from the production of an extra unit of output.