What is expand cos(((2n-1)pi)/2) ?

The solution to expand cos(((2n-1)pi)/2) is cos((2pin-pi)/2)

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expand cos(((2n-1)pi)/2)

expand

cos (\frac{( 2 n - 1 ) π}{2})

cos (\frac{2 πn - π}{2})

Solution steps

cos (\frac{( 2 n - 1 ) π}{2})

\frac{( 2 n - 1 ) π}{2} = \frac{2 πn - π}{2}

= cos (\frac{2 πn - π}{2})

(\frac{x}{2 - 5 y})^{4}

\frac{n + 1}{( 3 n + 1 ) ^{15}}

(4 e - 7 f)^{3}

(2 - i)^{6}

(1 - 3)^{4}

What is expand cos(((2n-1)pi)/2) ?
The solution to expand cos(((2n-1)pi)/2) is cos((2pin-pi)/2)