Evaluate the cosine of inverse tangent - free online tutoring

The video tutorial explains how to find the inverse tangent of two, starting with an introduction to the concept and the unit circle. It discusses how tangent can represent different triangles and the constraints of the inverse tangent function. The tutorial then demonstrates calculating the hypotenuse and cosine of a triangle, concluding with an invitation for further questions.

What is the inverse tangent of two, and how can it be represented in terms of triangles?

Explain why the triangle used for finding the inverse tangent of two must be in the first or fourth quadrant.

How do you calculate the hypotenuse when given the sides of a triangle with lengths 2 and 1?

What is the cosine of the triangle formed when calculating the inverse tangent of two?

Describe the process of rationalizing the denominator when finding the cosine of the triangle.