Evaluate the Trigonometric Function of the Given Quadrantal Angle $$\cos 540 ^ { \circ }$$

question 342

Multiple Choice

Evaluate the trigonometric function of the given quadrantal angle. If the value is undefined, write "undefined."
- $$\cos 540 ^ { \circ }$$

• A) undefined
• B) 0
• C) -1
• D) 1

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