What is simplify-cos(3-pin) ?

The solution to simplify-cos(3-pin) is -cos(3)(-1)^{-n}

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simplify-cos(3-pin)

simplify

- cos (3 - πn)

- cos (3) (- 1)^{- n}

Solution steps

- cos (3 - πn)

Use the basic trigonometric identity:

cos (x + nπ) = (- 1)^{n} cos (x)

= - (- 1)^{- n} cos (3)

cos (arctan (2 x))

cos (x + \frac{7 π}{6})

- 6 cos (x + \frac{π}{4})

\frac{tan ( y ) d y}{cos ^{2} ( y )}

cot (\frac{3 π}{2} - x)

What is simplify-cos(3-pin) ?
The solution to simplify-cos(3-pin) is -cos(3)(-1)^{-n}