Simplify cos(12)

Problem

cos(12)

Solution

1. Identify the expression as the cosine of the number 12

2. Determine the units of the argument. Since there is no degree symbol (, the value 12 is assumed to be in radians.

3. Evaluate the expression. The value 12 is not a standard multiple of π (like π/6 or π/4, so the expression cos(12) is already in its simplest exact form.

4. Approximate the value if a decimal is required. Using a calculator in radian mode, cos(12)≈0.8438539587

Final Answer

cos(12)=cos(12)

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