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Popular >

4cos(225)

Solution

4 cos (22 5^{\circ})

Solution

- 22

+1

Solution steps

4 cos (22 5^{\circ})

Rewrite using trig identities:

cos (22 5^{\circ}) = - \frac{2}{2}

= 4 (- \frac{2}{2})

Simplify

4 (- \frac{2}{2}) : - 22

= - 22

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Frequently Asked Questions (FAQ)

What is the value of 4cos(225) ?
The value of 4cos(225) is -2sqrt(2)