Simplify cos(x)cos(x)

Problem

cos(x)*cos(x)

Solution

1. Identify the expression as a product of a trigonometric function multiplied by itself.

2. Apply the definition of an exponent, where any term a multiplied by itself a⋅a is written as a2

3. Rewrite the expression using standard trigonometric notation, where the exponent is placed between the function name and the argument.

Final Answer

cos(x)*cos(x)=cos2(x)

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