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Popular >

100cos(30)

Solution

100 cos (3 0^{\circ})

Solution

503

+1

Decimal Notation

86.60254 \dots

Solution steps

100 cos (3 0^{\circ})

Use the following trivial identity:

cos (3 0^{\circ}) = \frac{3}{2}

cos (3 0^{\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{3}{2}

= 100 \cdot \frac{3}{2}

Simplify

100 \cdot \frac{3}{2} : 503

100 \cdot \frac{3}{2}

Multiply fractions:

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

= \frac{3 \cdot 100}{2}

Divide the numbers:

\frac{100}{2} = 50

= 503

= 503

Popular Examples

arccos(sin(pi/6))

arccos (sin (\frac{π}{6}))

cos (\frac{4 π}{2})

cos (1 5^{\circ}) cos (7 5^{\circ})

cos(arcsin(3/5))

cos (arcsin (\frac{3}{5}))

sin (157. 5^{\circ})

Frequently Asked Questions (FAQ)

What is the value of 100cos(30) ?
The value of 100cos(30) is 50sqrt(3)