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Popular >

-4pi^2cos((5pi)/4)

Solution

- 4 π^{2} cos (\frac{5 π}{4})

Solution

22 π^{2}

+1

Solution steps

- 4 π^{2} cos (\frac{5 π}{4})

Rewrite using trig identities:

cos (\frac{5 π}{4}) = - \frac{2}{2}

= - 4 π^{2} (- \frac{2}{2})

Simplify

- 4 π^{2} (- \frac{2}{2}) : 22 π^{2}

= 22 π^{2}

Popular Examples

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Frequently Asked Questions (FAQ)

What is the value of -4pi^2cos((5pi)/4) ?
The value of -4pi^2cos((5pi)/4) is 2sqrt(2)pi^2