Find the Exact Value of the Composition $$\cos \left( \sin ^ { - 1 } \frac { 4 } { 5 } \right)$$

question 176

Multiple Choice

Find the exact value of the composition.
- $$\cos \left( \sin ^ { - 1 } \frac { 4 } { 5 } \right)$$

• A) \(- \frac { 3 } { 5 }\)
• B) \(\frac { 1 } { 5 }\)
• C) \(- \frac { 4 } { 5 }\)
• D) \(\frac { 3 } { 5 }\)

---

Definitions:

Double-Blind Procedure

An experimental technique in which neither the participants nor the experimenters know who is receiving a particular treatment, used to prevent bias.

Random Assignment

A method used in experiments where participants are assigned to groups in a way that each has an equal chance of being placed in any group, minimizing biases.

Nonverbal Behaviors

Communication actions, excluding spoken words, that convey messages and emotions, such as facial expressions, body language, and gestures.

Singles Bars

Social venues primarily aimed at single individuals seeking to meet others for romantic or dating purposes.