Find the Exact Value cos(7)

Problem

cos(7)

Solution

1. Identify the expression as the cosine of 7 radians.

2. Determine if 7 is a standard angle or a multiple of π Since 7 is not a standard angle (like π/6 π/4 etc.) and cannot be expressed as a simple sum or difference of standard angles, it does not have a simplified exact value using radicals or integers.

3. Conclude that the exact value is represented by the expression itself, as it cannot be simplified further into a more basic exact form.

Final Answer

cos(7)=cos(7)

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