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Popular >

sin(30)*2

Solution

sin (3 0^{\circ}) \cdot 2

Solution

1

Solution steps

sin (3 0^{\circ}) \cdot 2

Use the following trivial identity:

sin (3 0^{\circ}) = \frac{1}{2}

sin (3 0^{\circ})

sin (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} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{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} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{1}{2}

= \frac{1}{2} \cdot 2

Simplify

\frac{1}{2} \cdot 2 : 1

\frac{1}{2} \cdot 2

Convert element to fraction:

2 = \frac{2}{1}

= \frac{1}{2} \cdot \frac{2}{1}

Cross-cancel:

2

= 1

= 1

Popular Examples

arctan (\frac{15}{10})

sin (11 8^{\circ})

arctan (\frac{14}{4})

cos (3 \cdot \frac{π}{4})

cos(arccos(3/4))

cos (arccos (\frac{3}{4}))

Frequently Asked Questions (FAQ)

What is the value of sin(30)*2 ?
The value of sin(30)*2 is 1