Find an Algebraic Expression Equivalent to the Given Expression $\cos \left( \arctan \frac { \sqrt { 5 } } { u } \right)$

question 48

Multiple Choice

Find an algebraic expression equivalent to the given expression.
- $\cos \left( \arctan \frac { \sqrt { 5 } } { u } \right)$

• A) \(\frac { \sqrt { 5 } } { u }\)
• B) \(\frac { \sqrt { 5 u ^ { 2 } + 25 } } { 5 }\)
• C) \(\frac { u \sqrt { u ^ { 2 } + 5 } } { u ^ { 2 } + 5 }\)
• D) \(\frac { \sqrt { \mathrm { u } ^ { 2 } + 5 } } { 5 }\)

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Definitions:

Firm Commitment Underwriting

A type of underwriting where the underwriter agrees to buy all the unsold shares of an issue at a fixed price, taking on the risk of selling them to the public.

Underwriting Syndicate

A group of financial institutions that work together to issue new securities to the public, sharing the risk and the work.

Common Stock

A type of equity ownership in a corporation, giving holders voting rights and a share in the company's profits through dividends.