Solve the Problem $\cos \frac { \theta } { 2 }$

question 396

Multiple Choice

Solve the problem.
-Find $\cos \frac { \theta } { 2 }$ , given that $\cos \theta = - \frac { 3 } { 5 }$ and $\theta$ terminates in $90 ^ { \circ } < \theta < 180 ^ { \circ }$ .

• A) \(- \frac { \sqrt { 5 } } { 5 }\)
• B) \(\frac { \sqrt { 30 } } { 10 }\)
• C) \(\frac { \sqrt { 5 } } { 5 }\)
• D) \(- \frac { \sqrt { 30 } } { 10 }\)

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Definitions:

Hidden Actions

Situations in a principal-agent relationship where the agent undertakes actions that the principal cannot observe directly.

Hidden Information

Circumstances in which one party in a transaction has access to more or better information than the other party, potentially leading to an imbalance in decision-making or exploitation.

Moral Hazard

A situation where one party is more likely to take risks because another party bears the cost of those risks.

All-You-Can-Eat Buffets

Dining establishments offering customers the opportunity to eat unlimited amounts of food for a fixed price.