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Popular >

-(cos(-2+2))/2

Solution

- \frac{cos ( - 2 + 2 )}{2}

Solution

- \frac{1}{2}

+1

Decimal Notation

- 0.5

Solution steps

- \frac{cos ( - 2 + 2 )}{2}

Simplify

= - \frac{cos ( 0 )}{2}

Use the following trivial identity:

cos (0) = 1

cos (0)

cos (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

= 1

= - \frac{1}{2}

Popular Examples

\frac{1}{sinh ( 0 )}

-0*cos(pi/4)-sin(0)

- 0 \cdot cos (\frac{π}{4}) - sin (0)

cos (\frac{180}{3})

2cos(3((2pi)/3))

2 cos (3 (\frac{2 π}{3}))

cot (5 9^{\circ})

Frequently Asked Questions (FAQ)

What is the value of -(cos(-2+2))/2 ?
The value of -(cos(-2+2))/2 is -1/2