What is (cos(npi))/(npi) ?

The solution to (cos(npi))/(npi) is ((-1)^n)/(pin)

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simplify (cos(npi))/(npi)

simplify

\frac{cos ( nπ )}{nπ}

\frac{( - 1 ) ^{n}}{πn}

Solution steps

\frac{cos ( nπ )}{nπ}

Use the basic trigonometric identity:

cos (nπ) = (- 1)^{n}

= \frac{( - 1 ) ^{n}}{nπ}

sin (arctan (\frac{L}{z}))

θ cos (- 77 0^{\circ})

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