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Popular >

250cos(45)

Solution

250 cos (4 5^{\circ})

Solution

1252

+1

Decimal Notation

176.77669 \dots

Solution steps

250 cos (4 5^{\circ})

Use the following trivial identity:

cos (4 5^{\circ}) = \frac{2}{2}

cos (4 5^{\circ})

cos (x)

periodicity table with

36 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

= \frac{2}{2}

= 250 \cdot \frac{2}{2}

Simplify

250 \cdot \frac{2}{2} : 1252

250 \cdot \frac{2}{2}

Multiply fractions:

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

= \frac{2 \cdot 250}{2}

Divide the numbers:

\frac{250}{2} = 125

= 1252

= 1252

Popular Examples

3 sin (15 0^{\circ})

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cot(60)tan(30)+sec^2(45)

cot (6 0^{\circ}) tan (3 0^{\circ}) + sec^{2} (4 5^{\circ})

arctan (\frac{20}{40})

Frequently Asked Questions (FAQ)

What is the value of 250cos(45) ?
The value of 250cos(45) is 125sqrt(2)