Evaluating the cotangent function using the first quadrant of the unit circle

The video tutorial explains the relationship between tangent and cotangent, emphasizing that tangent is the ratio of y to x, while cotangent is the inverse. It guides viewers through identifying the coordinates for the angle π/4 on the unit circle, which are (sqrt(2)/2, sqrt(2)/2). Using these coordinates, the tutorial demonstrates how to calculate the cotangent of π/4 by dividing x by y, resulting in a value of one.

What are the coordinate points for the angle π / 4 in the unit circle?

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What is the relationship between the X and Y coordinates for the angle π / 4?

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