Find the Exact Value by Using a Half-Angle Identity $\cos x$

question 244

Multiple Choice

Find the exact value by using a half-angle identity.
-Write $\cos x$ in terms of $\cot x$ .

• A) \(\frac { \pm \sqrt { \cot ^ { 2 } x + 1 } } { \cot x }\)
• B) \(\frac { \pm \cot x \sqrt { \cot ^ { 2 } x + 1 } } { \cot ^ { 2 } x + 1 }\)
• C) \(\frac { \pm \sqrt { \cot ^ { 2 } x + 1 } } { \cot ^ { 2 } x + 1 }\)
• D) \(\pm \sqrt { \cot ^ { 2 } x + 1 }\)

---

Definitions:

Probability

A measure of the likelihood of a particular event occurring, ranging from 0 (impossible) to 1 (certain).

Complement

The complement in mathematics refers to the amount needed to complete something or make it whole, often seen in set theory as elements not in the subset.

Traffic Court

A specialized judicial process for handling legal violations related to driving and traffic rules.

Show Up

Typically refers to the act of appearing or being present at a given location or event.