In Exercises 1728, evaluate the expression exactly without

Chapter 4, Problem 297

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QUESTION:

In Exercises 17–28, evaluate the expression exactly without a calculator.

\(\cos 330^{\circ}\)

Questions & Answers

QUESTION:

In Exercises 17–28, evaluate the expression exactly without a calculator.

\(\cos 330^{\circ}\)

ANSWER:

Step 1 of 2

We need to evaluate the value of

Also we know that

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