Two Sides of a Right Triangle ABC (C Is the Right

question 11

Multiple Choice

Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given
angle. Give exact answers with rational denominators.
-Find $\cos \mathrm { A }$ when $\mathrm { a } = \sqrt { 13 }$ and $\mathrm { c } = 10$ .

• A) \(\frac { 13 } { 10 }\)
• B) \(\frac { \sqrt { 87 } } { 10 }\)
• C) \(\frac { 87 } { 13 }\)
• D) \(\frac { \sqrt { 13 } } { 10 }\)

---

Definitions:

Collectivism

A cultural or societal value emphasizing the importance of groups and community over individual achievement or identity.

Cultural Outlook

The perspective and attitude towards life and world events from the standpoint of a specific culture's traditions, beliefs, and norms.

Individualism

A societal belief system that prioritizes individual autonomy over the control exercised by groups or government entities.

Subculture

A culture within a culture, based on ethnicity, class, region, or some other variable.