Evaluate Without Using a Calculator $\cos \omega$ , If $\tan \omega = - \frac { 8 } { 5 }$

question 482

Multiple Choice

Evaluate without using a calculator.
- $\cos \omega$ , if $\tan \omega = - \frac { 8 } { 5 }$ and $\sin \omega > 0$

• A) \( -\frac{\sqrt{89}}{5} \)
• B) \( \frac{\sqrt{89}}{8} \)
• C) \( -\frac{5 \sqrt{89}}{89} \)
• D) \( \frac{5 \sqrt{89}}{89} \)

Recognize the effects of the bystander's perceptions on their intervention decisions.

Identify conditions under which good moods and empathy promote helping behavior.

Analyze the role of social identities and group membership in determining helping behavior.

Apply the concept of reciprocity in prosocial behavior.

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Definitions:

Resource Market

The marketplace where resources or inputs (like labor, capital, and raw materials) used to produce goods and services are bought and sold.

Excess Burden

Refers to the cost to society created by market inefficiency, which occurs when supply and demand are out of equilibrium.

Deadweight Loss

A loss of economic efficiency that can occur when the free market equilibrium for a good or a service is not achieved, leading to a net loss in total surplus.

Mutual Exchanges

A process where parties agree to transfer goods, services, or other items of value with each other.