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Popular >

simplify cos^2(npi)

Solution

simplify

cos^{2} (nπ)

Solution

1

Solution steps

cos^{2} (nπ)

Use the basic trigonometric identity:

cos (nπ) = (- 1)^{n}

= ((- 1)^{n})^{2}

Simplify

= 1

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Frequently Asked Questions (FAQ)

What is cos^2(npi) ?
The solution to cos^2(npi) is 1