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Popular >

simplify cos((npi*2)/2)

Solution

simplify

cos (\frac{nπ \cdot 2}{2})

Solution

(- 1)^{n}

Solution steps

cos (\frac{nπ 2}{2})

Divide the numbers:

\frac{2}{2} = 1

= cos (πn)

Use the basic trigonometric identity:

cos (nπ) = (- 1)^{n}

= (- 1)^{n}

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Frequently Asked Questions (FAQ)

What is cos((npi*2)/2) ?
The solution to cos((npi*2)/2) is (-1)^n