How to evaluate the composition in terms of x

The video tutorial explores whether a point lies on the unit circle by analyzing triangle properties and quadrant constraints. It involves calculating the cosine and hypotenuse using variables, and concludes with rationalizing the denominator. Key concepts include understanding the unit circle, triangle properties, and the importance of quadrant analysis.

Explain why tangent is only positive in the first and fourth quadrants.

How do you find the hypotenuse in terms of X for the triangle discussed?

What is the significance of the first quadrant in the context of this problem?

Describe the process of rationalizing the denominator as mentioned in the discussion.

What are the last two questions that are mentioned to be on the test or quiz?