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Popular >

-1/2 cos(2(0))

Solution

- \frac{1}{2} cos (2 (0))

Solution

- \frac{1}{2}

+1

Decimal Notation

- 0.5

Solution steps

- \frac{1}{2} cos (2 (0))

= - \frac{1}{2} cos (2 \cdot 0)

Simplify:

2 \cdot 0 = 0

2 \cdot 0

Apply rule

0 \cdot a = 0

= 0

- \frac{1}{2} cos (0) = - \frac{cos ( 0 )}{2}

- \frac{1}{2} cos (0)

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= - \frac{1 \cdot cos ( 0 )}{2}

Multiply:

1 \cdot cos (0) = cos (0)

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

= - \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}

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Frequently Asked Questions (FAQ)

What is the value of -1/2 cos(2(0)) ?
The value of -1/2 cos(2(0)) is -1/2