Evaluate for the inverse tangent using the unit circle

The video tutorial explains the concept of tangent in trigonometry, focusing on its definition as the ratio of the y-coordinate to the x-coordinate. It covers the unit circle, highlighting key angles such as π/6, π/4, and π/3, and demonstrates how to calculate the tangent for these angles. The tutorial also addresses the handling of negative tangent values and the restrictions of tangent within the first and fourth quadrants, concluding with the identification of the correct angle in the fourth quadrant.

How do you rationalize the denominator of 1 / sqrt 3?

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What is the restriction on the tangent function regarding its quadrants?

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