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

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Definitions:

Macrophages

Large phagocytic cells found in tissues or as mobile white blood cells at sites of infection, playing essential roles in the immune response and tissue homeostasis.

Phagocytic Activity

Refers to the process by which certain cells engulf and digest foreign particles, bacteria, and other microorganisms.

Cytokines

Small proteins released by cells, especially immune cells, that act as signaling molecules in the immune system and inflammation.

Infection

The invasion and multiplication of microorganisms in body tissues, which can cause disease and trigger the immune response.