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Popular >

20cos((2pi)/3)

Solution

20 cos (\frac{2 π}{3})

Solution

- 10

Solution steps

20 cos (\frac{2 π}{3})

Use the following trivial identity:

cos (\frac{2 π}{3}) = - \frac{1}{2}

= 20 (- \frac{1}{2})

Simplify

20 (- \frac{1}{2}) : - 10

= - 10

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Frequently Asked Questions (FAQ)

What is the value of 20cos((2pi)/3) ?
The value of 20cos((2pi)/3) is -10