Evaluate cos(100)

Problem

cos(100)

Solution

1. Identify the input as an angle. Since no degree symbol is provided, the value 100 is assumed to be in radians.

2. Determine the quadrant of the angle. Since 100≈31.83*π we can find the coterminal angle by subtracting multiples of 2*π

3. Calculate the numerical value using a calculator or Taylor series expansion.

4. Approximate the result to four decimal places.

Final Answer

cos(100)≈0.8623

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