Identify the location of $-pi/2$ on a unit circle

On the unit circle, angles are measured starting from the positive x-axis and moving counterclockwise.

To find the location of $-\pi/2$:

– Starting from the positive x-axis, move clockwise because the angle is negative.

– $\pi/2$ is 90 degrees, so moving clockwise 90 degrees lands you on the negative y-axis.

Therefore, the coordinates of $-\pi/2$ on the unit circle are:

$ (0, -1) $

Locate $-pi/2$ on the unit circle:

– Begin at the positive x-axis.

– Move 90 degrees clockwise.

This places you on the negative y-axis.

Thus, the coordinates are:

$ (0, -1) $

$-pi/2$ on the unit circle is at:

$ (0, -1) $

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