We can find the value of cos β by using the unit circle and the given information that β = 3π/2.
In the unit circle, the x-coordinate of a point represents the cosine value of the angle formed by that point with the positive x-axis. Since β = 3π/2, this angle is on the negative y-axis.
When the angle is on the negative y-axis, the x-coordinate of the point is 0. Therefore, cos β = 0.
We can find the value of cos β by using the unit circle and the given information that β = 3π/2.
In the unit circle, the x-coordinate of a point represents the cosine value of the angle formed by that point with the positive x-axis. Since β = 3π/2, this angle is on the negative y-axis.
When the angle is on the negative y-axis, the x-coordinate of the point is 0. Therefore, cos β = 0.
So, cos β = 0.