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Popular >

simplify cos(n(-pi))

Solution

simplify

cos (n (- π))

Solution

(- 1)^{- n}

Solution steps

cos (n (- π))

Use the basic trigonometric identity:

cos (nπ) = (- 1)^{n}

= (- 1)^{- n}

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Frequently Asked Questions (FAQ)

What is cos(n(-pi)) ?
The solution to cos(n(-pi)) is (-1)^{-n}