SOLUTION: What is the exact value of cos-270 degrees and how to get it

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Question 1045507: What is the exact value of cos-270 degrees and how to get it
Answer by ikleyn(52792) About Me  (Show Source):
You can put this solution on YOUR website!
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The value of cos-270 degrees is the same as cos(90) degree and is equal to 0 (zero).

To get it, you need to know what the cosine is and what 90 degree is.