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Popular >

cos(2.5pi)

Solution

cos (2.5 π)

Solution

0

Solution steps

cos (2.5 π)

= cos (\frac{5}{2} π)

Simplify:

\frac{5}{2} π = \frac{5 π}{2}

= cos (\frac{5 π}{2})

cos (\frac{5 π}{2}) = cos (\frac{π}{2})

= cos (\frac{π}{2})

Use the following trivial identity:

cos (\frac{π}{2}) = 0

= 0

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12.4-10(0.5pi-arcsin(0.5)-0.5(1-(0.5)^2)^{1/2})

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Frequently Asked Questions (FAQ)

What is the value of cos(2.5pi) ?
The value of cos(2.5pi) is 0