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To find the value of \( \cos(270^\circ) \):

1. The cosine function gives the x-coordinate of a point on the unit circle corresponding to the given angle.
2. \( 270^\circ \) is an angle located on the negative y-axis.
3. On the unit circle, at \( 270^\circ \), the point is \( (0, -1) \).

Thus, the cosine of \( 270^\circ \) is:

\[
\cos(270^\circ) = 0
\]

Would you like more details or have any other questions? Here are five related questions to expand your understanding:

1. What is the sine of \( 270^\circ \)?
2. How can we compute cosine values for angles not on the axes?
3. What is the value of \( \cos(90^\circ) \)?
4. Can you explain the difference between sine and cosine in terms of the unit circle?
5. How do cosine values change across the four quadrants?

**Tip:** Remember, the cosine function represents the x-coordinate on the unit circle for any angle, while sine represents the y-coordinate.

Find the indicated function value. If it is undefined, say so. cos(270°)

Learn how to find the value of cos(270°) by understanding its location on the unit circle. This problem covers essential trigonometric concepts such as cosine and the unit circle, suitable for high school students.

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