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Popular >

3cos(225)

Solution

3 cos (22 5^{\circ})

Solution

- \frac{3 2}{2}

+1

Solution steps

3 cos (22 5^{\circ})

Rewrite using trig identities:

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

= 3 (- \frac{2}{2})

Simplify

3 (- \frac{2}{2}) : - \frac{3 2}{2}

= - \frac{3 2}{2}

Popular Examples

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\frac{1.54}{9.81 \cdot sin ( 1 8 ^{\circ} )}

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1.6 (sin (1) + cos (1))

(2*0.0351)/(2.7)*ln(0.84cos(7.85*2.7))

\frac{2 \cdot 0.0351}{2.7} \cdot ln (0.84 cos (7.85 \cdot 2.7))

4 cos (π)

Frequently Asked Questions (FAQ)

What is the value of 3cos(225) ?
The value of 3cos(225) is -(3sqrt(2))/2